everyday science MCQ #49636

Electrical power in a circuit is given by:

everyday science MCQ #49636

  1. Question 1

    Q1. Electrical power in a circuit is given by:

    • A) P = VI
    • B) P = V²/I
    • C) P = V/I
    • D) P = V + I

    Answer: P = VI

    Explanation: Electrical power is the rate of energy transfer; P = VI where V is potential difference in volts and I is current in amperes, giving power in watts. This can also be expressed as P = I²R or P = V²/R using Ohm's Law.