Electric Field

Electric Field

Multiple Choice

TRUE or FALSE: The separation of distance between two charges is equal to  $\sqrt{\frac{k\left|q_1q_2\right|}{F_E}}$ . 

 

• True

• False

Multiple Choice

When a balloon is rubbed on clothes it acquires a charge by ___________.

• Induction

• reduction

• friction

• concuction

Multiple Choice

TRUE or FALSE: According to Coulomb's Law, the greater the separation of distance between two charges the greater the magnitude of the electrostatic force.

• True

• False

Multiple Choice

TRUE or FALSE: The mass of a single electron is equal to 9.109x10^-31 C.

• True

• False

Multiple Choice

TRUE or FALSE: The net force due to different charges around a single charge can be determined using superposition principle.

• True

• False

Multiple Choice

What happens to the field strength as the distance between two charged objects decreases?

• the strength stays the same

• the strength increases

• the strength decreases

• the strength fluctuates between positive and negative

Multiple Choice

What does the Law of Conservation of Charge state?

• like charges repel and opposites attract

• positive charge fields point away from a charge; negative points toward

• charges cannot be created nor destroyed, only transferred

Multiple Choice

Where can an electric field be found?

• below a force field

• in a gravitational field

• in the space surrounding a charged object

• outside of a magnetic field

Multiple Choice

Electrical field lines of a negatively charged object flow _______________.

• Inwards

• Outwards

• Clockwise

• Counter-Clockwise

Multiple Choice

The unit of electric field is not equivalent to ______.

• N/C

• J/C

• V/m

• J/Coulomb.meter

Multiple Choice

Which statement best describes the electric fields in the image?

• The charges are neutral.

• Both charges are negative, so the field lines are alike.

• The field lines move toward a positive charge and away from a negative charge.

• The field lines move away from a positive charge and toward a negative charge.

Multiple Choice

TRUE or FALSE: The electric field lines for a positive charge is always directed away from the charge.

• True

• False

Multiple Choice

Q_A and Q_B are two charges creating an electric field. Based on the electric field lines, we can conclude that _____________.

• Q_A and Q_B are both positive

• Q_A and Q_B are both negative

• Q_A is positive and Q_B is negative

• Q_A is negative and Q_B is positive

Multiple Choice

What does it mean when the electric field lines are close together?

• the field is positive

• the field is negative

• The field is strong

• the field is weak

Multiple Choice

The electrical force between charges is strongest when the charges are ______________.

• close together

• far apart

• the electric force is constant everywhere.

• there is no pattern

Multiple Choice

Consider the electric field lines shown in the diagram. From the diagram, it is apparent that object A is ____ and object B is ____.

• + , +

• + , -

• - , +

• - , -

Multiple Choice

At which point is the electric field the strongest

• A

• B

• C

• D

Multiple Choice

What is the magnitude of the electric field at a point where proton experiences an electrostatic force of 2.3 x 10^-25 N?

• 1.44 x 10^-6 N/C

• 3.68 x 10⁶ N/C

• 1.44 x 10⁴⁴ N/C

• 3.68 x 10^-44 N/C

Multiple Choice

An electrostatic force of 2 X 10² N is exerted on a charge of 4 Coulomb at point P in an electric field. What is the magnitude of the electric field intensity at P?

• 8 X 10² N/C

• 5 N/C

• 2 X 10^-2 N/C

• 50 N/C

Multiple Choice

A point charge Q has a distance of 2 meters from other charge with an electric field of 20 N/C. How much force does a 5 Coulombs charge feels?

• 4 N

• 100 N

• 40 N

• 10 N