Question

reitz integrated chemistry physics
electricity test

question 7
in an electrical circuit, a voltage difference:
select one:
☐ a. wastes electricity.
☐ b. is the term used for rate of charge flow.
☐ c. supplies energy to make charges flow.
☐ d. causes a short circuit.

Explanation:

Voltage difference (potential difference) provides the energy needed for electric charges to flow in a circuit. Option a is incorrect because resistance dissipates energy, not voltage difference. Option b describes current (rate of charge flow), not voltage difference. Option d is incorrect because a short circuit is caused by low resistance, not voltage difference itself.

Answer:

c. supplies energy to make charges flow.