MDCAT Physics MCQ #476

A 5 ohm resistor is connected to a 10V battery. What is the energy dissipated in 2 seconds?

MDCAT Physics MCQ #476

  1. Question 1

    Q1. A 5 ohm resistor is connected to a 10V battery. What is the energy dissipated in 2 seconds?

    • A) 20 J
    • B) 40 J
    • C) 80 J
    • D) 100 J

    Answer: 40 J

    Explanation: P = V^2/R = 10^2/5 = 20 W, E = P*t = 20*2 = 40 J.