Power is defined as the energy expended per unit of time. When translated to electrical terms, power is equal to
A)current multiplied by resistance.
B)current multiplied by voltage.
C)current divided by time.
D)voltage divided by time.
E)none of the above

Question

Quizplus · Accepted Answer

The formula for electrical power is P = VI, or power (P) equals current (I) multiplied by voltage (V). Choice A is the formula for Ohm's Law, which relates current and resistance, but does not give power directly. Choice C is not a valid formula for power. Choice D is the formula for calculating the rate of change of voltage with respect to time, which is not power.

Power Is Defined as the Energy Expended Per Unit of Time