A negatively charged particle is moving to the right, directly above a wire having a current flowing to the right, as shown in the figure. In which direction is the magnetic force exerted on the particle?

The magnetic force is zero since the velocity is parallel to the current.

Two very long parallel wires are a distance d apart and carry equal currents in opposite directions. The locations where the net magnetic field due to these currents is equal to zero are

The net field is not zero anywhere.

a distance d/2 to the left of the left wire and also a distance d/2 to the right of the right wire.

a distance d/√2 to the left of the left wire and also a distance d/√2 to the right of the right wire.

a distance d to the left of the left wire and also a distance d to the right of the right wire.

A long straight conductor has a constant current flowing to the right. A wire rectangle is situated above the wire, and also has a constant current flowing through it (as shown in the figure). Which of the following statements is true?

The net magnetic force on the wire rectangle is downward, and the net torque on it is zero.

The net magnetic force on the wire rectangle is upward, and there is also a net torque on the it.

The net magnetic force on the wire rectangle is zero, and the net torque on it is zero.

The net magnetic force on the wire rectangle is downward, and there is also a net torque on the it.

The net magnetic force on the wire rectangle is zero, but there is a net torque on it.

The figure shows three identical lightbulbs connected to a battery having a constant voltage across its terminals. What happens to the brightness of lightbulb 1 when the switch S is closed?

The brightness increases permanently.

The brightness will increase momentarily then return to its previous level.

The brightness will decrease momentarily then return to its previous level.

The brightness remains the same as before the switch is closed.

The brightness decreases permanently.

In the circuit shown in the figure, all the lightbulbs are identical. Which of the following is the correct ranking of the brightness of the bulbs?

A is the brightest, and B and C have equal brightness but less than A.

B and C have equal brightness, and A is the dimmest.

A is brightest, C is dimmest, and B is in between.

A and B have equal brightness, and C is the dimmest.

All three bulbs have the same brightness.

A light bulb is connected in the circuit shown in the figure with the switch S open. All the connecting leads have no appreciable resistance and the battery has no internal resistance. When we close the switch, which statements below accurately describe the behavior of the circuit? (There may be more than one correct choice.)

The brightness of the bulb will increase.

The potential drop across R2 will decrease.

The brightness of the bulb will decrease.

The brightness of the bulb will not change.

The potential drop across R2 will not change.

A resistor and a capacitor are connected in series across an ideal battery having a constant voltage across its terminals. At the moment contact is made with the battery, the voltage across the capacitor is

equal to the battery's terminal voltage.

less than the battery's terminal voltage, but greater than zero.

equal to the battery's terminal voltage.

A resistor and a capacitor are connected in series across an ideal battery having a constant voltage across its terminals. At the moment contact is made with the battery the voltage across the resistor is

equal to the battery's terminal voltage.

less than the battery's terminal voltage, but greater than zero.

An RC circuit is connected across an ideal DC voltage source through an open switch. The switch is closed at time t = 0 s. Which of the following statements regarding the circuit are correct? (There may be more than one correct choice.)

Once the capacitor is essentially fully charged, there is no appreciable current in the circuit.

The capacitor charges to its maximum value in one time constant and the current is zero at that time.

The potential difference across the resistor and the potential difference across the capacitor are always equal.

The potential difference across the resistor is always greater than the potential difference across the capacitor.

The potential difference across the capacitor is always greater than the potential difference across the resistor

A wire of resistivity ρ must be replaced in a circuit by a wire of the same material but 4 times as long. If, however, the resistance of the new wire is to be the same as the resistance of the original wire, the diameter of the new wire must be

2 times the diameter of the original wire.

4 times the diameter of the original wire.

the same as the diameter of the original wire.

1/2 the diameter of the original wire.

1/4 the diameter of the original wire.

A nonconducting sphere contains positive charge distributed uniformly throughout its volume. Which statements about the potential due to this sphere are true? All potentials are measured relative to infinity. (There may be more than one correct choice.)

The potential is highest at the center of the sphere.

The potential at the center of the sphere is zero.

The potential at the center of the sphere is the same as the potential at the surface.

The potential at the surface is higher than the potential at the center.

The potential at the center is the same as the potential at infinity.

A conducting sphere contains positive charge distributed uniformly over its surface. Which statements about the potential due to this sphere are true? All potentials are measured relative to infinity. (There may be more than one correct choice.)

The potential at the center of the sphere is the same as the potential at the surface.

The potential is lowest, but not zero, at the center of the sphere.

The potential at the center of the sphere is zero.

The potential at the surface is higher than the potential at the center.

The potential at the center is the same as the potential at infinity.

The graph in the figure shows the variation of the electric potential V(x) (in arbitrary units) as a function of the position x (also in arbitrary units). Which of the choices below correctly describes the orientation of the x-component of the electric field along the x-axis?

E x is positive from x = -2 to x = 0, and negative from x = 0 to x = 2.

E x is positive from x = -2 to x = 2.

E x is negative from x = -2 to x = 0, and positive from x = 0 to x = 2.

E x is negative from x = -2 to x = 2

The potential as a function of position x is shown in the graph in the figure. Which statement about the electric field is true?

The electric field is zero at x = 0, its magnitude is at a maximum at x = 5 cm, and the field is directed to the right there. B) C) D)

The electric field is zero at x = 5 cm, its magnitude is at a maximum at x = 0, and the field is directed to the right there.

The electric field is zero at x = 0, its magnitude is at a maximum at x = 15 cm, and the field is directed to the left there.

The electric field is zero at x = 10 cm, its magnitude is at a maximum at x = 5 cm, and the field is directed to the left there.

Equal but opposite charges Q are placed on the square plates of an air-filled parallel-plate capacitor. The plates are then pulled apart to twice their original separation, which is small compared to the dimensions of the plates. Which of the following statements about this capacitor are true? (There may be more than one correct choice.)

The potential difference across the plates has doubled.

The energy stored in the capacitor has doubled.

The energy density in the capacitor has increased.

The electric field between the plates has increased.

When two or more capacitors are connected in series across a potential difference,

All of the choices are correct.

the potential difference across the combination is the algebraic sum of the potential differences across the individual capacitors.

each capacitor carries the same amount of charge.

the equivalent capacitance of the combination is less than the capacitance of any of the capacitors.

None of the above choices are correct.

A negative charge, if free, will tend to move

from low potential to high potential.

from high potential to low potential.

in the direction of the electric field.

Suppose a region of space has a uniform electric field, directed towards the right, as shown in the figure. Which statement about the electric potential is true?

The potential at points A and B are equal, and the potential at point C is lower than the potential at point A.

The potential at all three locations (A, B, C) is the same because the field is uniform.

The potential at points A and B are equal, and the potential at point C is higher than the potential at point A.

The potential at point A is the highest, the potential at point B is the second highest, and the potential at point C is the lowest.

Which statements are true for an electron moving in the direction of an electric field? (There may be more than one correct choice.)

Its electric potential energy increases as it goes from high to low potential.

Its potential energy increases as its kinetic energy decreases.

Its kinetic energy decreases as it moves in the direction of the electric field.

Its electric potential energy decreases as it goes from high to low potential.

Its kinetic energy increases as it moves in the direction of the electric field.

A negative charge is moved from point A to point B along an equipotential surface. Which of the following statements must be true for this case?

No work is required to move the negative charge from point A to point B.

The negative charge performs work in moving from point A to point B.

Work is required to move the negative charge from point A to point B.

The work done on the charge depends on the distance between A and B.

Work is done in moving the negative charge from point A to point B.

Which of the following statements about Gauss's law are correct? (There may be more than one correct choice.)

If a Gaussian surface is completely inside an electrostatic conductor, the electric field must always be zero at all points on that surface.

The electric flux passing through a Gaussian surface depends only on the amount of charge inside that surface, not on its size or shape.

Gauss's law is valid only for symmetric charge distributions, such as spheres and cylinders.

If there is no charge inside of a Gaussian surface, the electric field must be zero at points of that surface.

Only charge enclosed within a Gaussian surface can produce an electric field at points on that surface.

Consider a spherical Gaussian surface of radius R centered at the origin. A charge Q is placed inside the sphere. To maximize the magnitude of the flux of the electric field through the Gaussian surface, the charge should be located

The charge can be located anywhere, since flux does not depend on the position of the charge as long as it is inside the sphere.

The graph in the figure shows the electric field strength (not the field lines) as a function of distance from the center for a pair of concentric uniformly charged spheres. Which of the following situations could the graph plausibly represent? (There may be more than one correct choice.)

a positively charged conducting sphere within another positively charged conducting sphere

a positively charged nonconducting thin-walled spherical shell inside of a positively charged conducting sphere

a positively charged conducting sphere within an uncharged conducting sphere

a solid nonconducting sphere, uniformly charged throughout its volume, inside of a positively charged conducting sphere

a positively charged nonconducting thin-walled spherical shell inside of another positively charged nonconducting thin-walled spherical shell

AP Physics C E&M Review

12th Grade - University

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AP Physics C E&M Review

Quiz

•

Physics

•

12th Grade - University

•

Practice Problem

•

Medium

•

NGSS

HS-PS3-5, HS-PS2-5, HS-PS2-4

Standards-aligned

ALISON RENNER

Used 41+ times

FREE Resource

95 questions

Show all answers

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A current carrying loop of wire lies flat on a table top. When viewed from above, the current moves around the loop in a counterclockwise sense.
For points OUTSIDE the loop, the magnetic field caused by this current

circles the loop in a clockwise direction.

circles the loop in a counterclockwise direction.

points straight up.

points straight down.

is zero.

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A current carrying loop of wire lies flat on a table top. When viewed from above, the current moves around the loop in a counterclockwise sense.
For points INSIDE the loop, the magnetic field caused by this current

circles the loop in a clockwise direction.

circles the loop in a counterclockwise direction.

points straight up.

points straight down.

is zero.

Tags

NGSS.HS-PS2-5

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A horizontal wire carries a current straight toward you. From your point of view, the magnetic field at a point directly below the wire points

vertically upward.

directly toward you.

to the right.

to the left.

directly away from you.

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

An electron moving in the direction of the +x-axis enters a magnetic field. If the electron experiences a magnetic deflection in the -y direction, the direction of the magnetic field in this region points in the direction of the

+z-axis.

-z-axis.

-x-axis.

+y-axis.

-y-axis.

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Three particles travel through a region of space where the magnetic field is out of the page, as shown in the figure. The electric charge of each of the three particles is, respectively,

1 is neutral, 2 is negative, and 3 is positive.

1 is neutral, 2 is positive, and 3 is negative.

1 is positive, 2 is neutral, and 3 is negative.

1 is positive, 2 is negative, and 3 is neutral.

1 is negative, 2 is neutral, and 3 is positive.

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A charge is accelerated from rest through a potential difference V and then enters a uniform magnetic field oriented perpendicular to its path. The field deflects the particle into a circular arc of radius R. If the accelerating potential is tripled to 3V, what will be the radius of the circular arc?

√3 R

R / √3

R / 9

Tags

NGSS.HS-PS2-4

NGSS.HS-PS2-5

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Ions having equal charges but masses of M and 2M are accelerated through the same potential difference and then enter a uniform magnetic field perpendicular to their path. If the heavier ions follow a circular arc of radius R, what is the radius of the arc followed by the lighter?

√2 R

R / √2

R / 2

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AP Physics C E&M Review

95 questions

A current carrying loop of wire lies flat on a table top. When viewed from above, the current moves around the loop in a counterclockwise sense.
For points OUTSIDE the loop, the magnetic field caused by this current

A current carrying loop of wire lies flat on a table top. When viewed from above, the current moves around the loop in a counterclockwise sense.
For points INSIDE the loop, the magnetic field caused by this current

A horizontal wire carries a current straight toward you. From your point of view, the magnetic field at a point directly below the wire points

An electron moving in the direction of the +x-axis enters a magnetic field. If the electron experiences a magnetic deflection in the -y direction, the direction of the magnetic field in this region points in the direction of the

Three particles travel through a region of space where the magnetic field is out of the page, as shown in the figure. The electric charge of each of the three particles is, respectively,

Ions having equal charges but masses of M and 2M are accelerated through the same potential difference and then enter a uniform magnetic field perpendicular to their path. If the heavier ions follow a circular arc of radius R, what is the radius of the arc followed by the lighter?

A charged particle is moving with speed v perpendicular to a uniform magnetic field. A second identical charged particle is moving with speed 2v perpendicular to the same magnetic field. If the frequency of revolution of the first particle is f, the frequency of revolution of the second particle is

The figure shows two long wires carrying equal currents I₁ and I₂ flowing in opposite directions. Which of the arrows labeled A through D correctly represents the direction of the magnetic field due to the wires at a point located at an equal distance d from each wire?

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AP Physics C E&M Review

95 questions

A current carrying loop of wire lies flat on a table top. When viewed from above, the current moves around the loop in a counterclockwise sense. For points OUTSIDE the loop, the magnetic field caused by this current

A current carrying loop of wire lies flat on a table top. When viewed from above, the current moves around the loop in a counterclockwise sense. For points INSIDE the loop, the magnetic field caused by this current

A horizontal wire carries a current straight toward you. From your point of view, the magnetic field at a point directly below the wire points

An electron moving in the direction of the +x-axis enters a magnetic field. If the electron experiences a magnetic deflection in the -y direction, the direction of the magnetic field in this region points in the direction of the

Three particles travel through a region of space where the magnetic field is out of the page, as shown in the figure. The electric charge of each of the three particles is, respectively,

Ions having equal charges but masses of M and 2M are accelerated through the same potential difference and then enter a uniform magnetic field perpendicular to their path. If the heavier ions follow a circular arc of radius R, what is the radius of the arc followed by the lighter?

A charged particle is moving with speed v perpendicular to a uniform magnetic field. A second identical charged particle is moving with speed 2v perpendicular to the same magnetic field. If the frequency of revolution of the first particle is f, the frequency of revolution of the second particle is

The figure shows two long wires carrying equal currents I1 and I2 flowing in opposite directions. Which of the arrows labeled A through D correctly represents the direction of the magnetic field due to the wires at a point located at an equal distance d from each wire?

Create a free account and access millions of resources

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Physics

A current carrying loop of wire lies flat on a table top. When viewed from above, the current moves around the loop in a counterclockwise sense.
For points OUTSIDE the loop, the magnetic field caused by this current

A current carrying loop of wire lies flat on a table top. When viewed from above, the current moves around the loop in a counterclockwise sense.
For points INSIDE the loop, the magnetic field caused by this current

The figure shows two long wires carrying equal currents I₁ and I₂ flowing in opposite directions. Which of the arrows labeled A through D correctly represents the direction of the magnetic field due to the wires at a point located at an equal distance d from each wire?