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WorksheetsPhysics 30 Unit B Concepts Quiz
Total questions: 49
Worksheet time: 25mins
Which of the following formulas is used to calculate the electric field due to a point charge?
F=ma
E=kq/r2
B=FIl
F=qE
Which unit is equivalent to one electron volt?
1.6 x 10-19 J
6.24 x 1018 J
1 J
9.8 J
What does the third hand rule help you find?
Direction of current in a wire
Direction of magnetic field due to a current
Direction of magnetic force on a charged particle
Direction of electric field due to a point charge
Which principle best explains the charging of an object by electrostatic induction?
Coulomb's Law
Faraday's Law
Lenz's Law
Gauss's Law
Which formula is used to calculate the electric force between two charges?
F=kq1q2/r2
F=ma
F=qvB
E=mc2
What is the formula to find the electric field due to a point charge?
E=kq/r2
E=Fq
E=qA
E=IlB
What is the formula to find the magnetic force on a charged particle moving with velocity in a magnetic field?
F=ma
F=qvB
F=kq1q2/r2
F=IlB
What is the unit of electric charge?
Newton
Joule
Volt
Coulomb
Which formula is used to calculate electric potential due to a point charge?
V=kq/r
V=Eq
V=Ed
V=1/2mv2
What happens to the electric force between two charges if the distance between them is doubled?
Halves
Quadruples
Remains the same
Reduces to one-fourth
What kind of material allows charges to move freely?
Insulator
Conductor
Dielectric
Semiconductor
What is the direction of the electric field around a negative point charge?
Radially outward
Radially inward
Circular
Zero
When is the formula F=IlB primarily used instead of F=qvB to calculate the magnetic force acting on a conductor?
When the conductor is stationary
When dealing with individual moving charged particles
When the conductor is carrying an electric current
When the magnetic field is non-uniform
Which of the following best describes the behavior of magnetic field lines near a north pole?
Inward
Outward
Parallel
Do not exist
What is the unit for electric field strength?
Newton
Volt/meter
Coulomb
Ampere
Which of the following is a vector quantity?
Electric potential
Electric charge
Magnetic field
Electric potential energy
A proton enters a magnetic field perpendicularly. What is the direction of the magnetic force?
Opposite to the field
Parallel to the field
Perpendicular to the field
Zero
What does Coulomb's Law describe?
Gravitational force between masses
Magnetic force between charges
Electric force between charges
Frictional force between surfaces
What happens to the electric field between parallel plates if the plate separation is doubled while keeping the voltage constant?
Halves
Doubles
Quadruples
Remains the same
Which of the following materials can be magnetized?
Copper
Aluminum
Iron
Glass
Which of the following fields exerts a force on a stationary charged particle?
Only electric field
Only magnetic field
Both electric and magnetic fields
Neither electric nor magnetic field
What is the direction of the electric field around a positive point charge?
Radially outward
Radially inward
Circular and clockwise
Circular and counterclockwise
The force on a charged particle moving in a magnetic field is always:
Along the direction of motion
Opposite to the direction of motion
Perpendicular to the direction of motion
Zero
Which formula describes the force between two point charges?
F=kq1q2/r2
F=ma
F=qvB
F=Gm1m2/r2
A negatively charged particle moving horizontally enters a magnetic field going into the page. The direction of its circular motion will be:
Clockwise
Counterclockwise
Along the magnetic field
Opposite to the magnetic field
A magnetic field exerts a force on:
Moving charges only
Stationary charges only
Both moving and stationary charges
Neither moving nor stationary charges
What does F = qE describe?
The gravitational force on a mass
The magnetic force on a moving charge
The electric force on a charge in an electric field
The normal force on an object
The magnetic force on a charged particle is zero when the particle:
Is stationary
Moves parallel to the magnetic field
Moves perpendicular to the magnetic field
Is negatively charged
What is the unit for electric field strength?
Newton per coulomb
Tesla
Ampere per meter
Joule per coulomb
Magnetic fields are created by:
Stationary charges only
Moving charges only
Both stationary and moving charges
Neither stationary nor moving charges
The electric field between parallel plates is:
Zero
Non-uniform
Uniform
Increasing from one plate to another
A positively charged particle enters a magnetic field perpendicularly. The path of the particle will be:
A straight line
A parabola
Circular
Hyperbolic
When a charged particle moves in a straight line parallel to a uniform electric field, its path will:
Remain a straight line
Become circular
Become parabolic
Zigzag
How does the radius of the circular path of a charged particle in a magnetic field depend on its speed?
Directly proportional
Inversely proportional
Radius squared is proportional
No dependence
When a charged particle moves in a straight line parallel to a uniform electric field, its path will:
Remain a straight line
Become circular
Become parabolic
Zigzag
Which of the following is true regarding the application of hand rules in physics?
Hand rules are used for both electric and magnetic fields.
Hand rules are only used for magnetic fields.
Hand rules are only used for electric fields.
Hand rules are not used in physics.
In an electric motor, what is responsible for the rotational motion of the coil?
Magnetic field
Electric field
Electromagnetic induction
Mechanical force
Which of the following best describes the generator effect?
Mechanical energy is converted into electrical energy
Electrical energy is converted into mechanical energy
Mechanical energy is converted into magnetic energy
Magnetic energy is converted into mechanical energy
When a charged particle enters a uniform electric field perpendicularly, its path will:
Remain a straight line
Become circular
Become parabolic
Zigzag
If the direction of the current is reversed in an electric motor, what will happen to the direction of rotation?
It will remain the same
It will reverse
It will stop
It will oscillate
Which of the following is true about the interaction between charged objects and magnets?
North poles of magnets attract positively charged objects.
South poles of magnets repel negatively charged objects.
Magnets can either attract or repel charged objects depending on their motion.
Magnets only exert a force on charged objects when the objects are in motion.
What is the primary function of the commutator in an electric motor?
Generate electricity
Reverse the current direction
Maintain a constant speed
Store mechanical energy
When is the formula F=qvB primarily used instead of F=IlB to calculate the magnetic force acting on a conductor?
When the conductor is coiled into multiple loops
When the conductor is stationary
When dealing with individual moving charged particles
When the magnetic field is non-uniform
A positively charged particle is placed near the north pole of a magnet. What type of force will the north pole of the magnet exert on the charged particle when it is stationary?
Attractive force
Repulsive force
No force
Depends on the charge of the particle
A current-carrying wire is placed parallel to a magnetic field. What will be the magnetic force acting on the wire?
Attractive
Repulsive
Zero
Depends on the magnitude of the current
A charged particle moves through a region where both electric and magnetic fields are present. Which of the following is true about the forces acting on the particle?
Only the magnetic field exerts a force on the particle.
Only the electric field exerts a force on the particle.
Both electric and magnetic fields exert forces on the particle.
Neither field exerts a force on the particle.
When determining the direction of an electric field around a positive point charge, which of the following techniques is used?
Right-hand rule
Left-hand rule
No hand rule; the field radiates outward
Fleming's rule
A negatively charged object is placed in an electric field. To find the direction of the electric force, you would:
Use the right-hand rule
Use the left-hand rule
Point in the direction opposite to the electric field
Point in the same direction as the electric field
When calculating the force on a charged particle due to an electric field, which formula would you use?
F=qvB
F=IlB
F=qE
F=mg
