Question

The available source of charge that pushes a charge through a circuit is
A. resistance.
B. voltage.
C. alternating current.
D. direct current.

Answer 1

For the charge to push through throughout the circuit, a force is needed to be available to push it. Voltage is the potential difference between the two poles and is a force that "pushes" the current available throughout the circuit. Thus, from the choices, the answer is B: voltage.