When a switch is closed in a DC electrical circuit,
A)electrons flow through the conductor at a very slow speed.
B)the electric field moves through the conductor at nearly the speed of light.
C)the current flow is proportional to the potential difference.
D)All of the above.

Question

Quizplus · Accepted Answer

When a switch is closed in a DC electrical circuit, electrons indeed flow through the conductor at a very slow speed (drift velocity), the electric field that drives the current moves through the conductor at nearly the speed of light, and the current flow is proportional to the potential difference across the circuit components, as described by Ohm's Law. Therefore, all of the statements A, B, and C are correct.

When a Switch Is Closed in a DC Electrical Circuit