Ch 17 Review

What is the energy possessed by a charge due to its position in an electric field?

• electrical potential energy

• electrical kinetic energy

• electrical mechanical energy

• electrical potential difference

Electric potential

• is measured in joules.

• depends on the charge at the point where it is measured.

• measures energy per unit charge.

• is the same as electrical potential energy.

Two positive charges, A and B, are separated by a distance. The electric potential at the position of charge A depends on

• the magnitudes of both charges and the distance between them.

• the magnitude of charge A and the distance to charge B.

• the magnitude of charge B.

• the magnitude of charge B and the distance to charge A.

Potential difference is

• inversely proportional to change in electrical potential energy.

• the measure of the electrical potential energy of a charge.

• the ratio of the change in potential energy to the magnitude of a charge.

• the ratio of the magnitude of a charge to its change in potential energy.

How does a positive charge move in an electric field in order to gain electrical potential energy?

• parallel to the electric field

• perpendicular to the electric field

• parallel to and in the same direction as the electric field

• parallel to and in the opposite direction to the electric field

A charge moves between two points in a uniform electric field. What information is needed to determine the potential difference between the two points?

• the magnitude of the charge, the magnitude of the field, and the displacement in the field

• the magnitude of the field and the displacement in the field

• the magnitude of the charge and the magnitude of the field

• the direction of the field and the displacement in the field

A battery is a device that maintains a potential difference between two

• light bulbs.

• terminals.

• charges.

• chemicals.

The energy provided by a battery connected to a circuit results from

• an electric field inside the battery.

• the components of the circuit.

• a potential difference.

• a chemical reaction.

What is capacitance?

• the amount of charge stored on a conductor

• the ability to store energy as separated charges

• the ability to store charge on the plates of a capacitor

• stored electrical energy

When a capacitor is connected to a source of potential difference, charges accumulate on the plates of the capacitor. The accumulation of charge stops when

• the charge on one plate is equal to the charge on the other plate.

• the charge on the capacitor becomes zero.

• the potential difference between the plates is the same as the source.

• there is a difference in the amount of charge on the two plates.