MDCAT Physics MCQ #559

A 100W resistor rated at 5W will burn out if:

MDCAT Physics MCQ #559

  1. Question 1

    Q1. A 100W resistor rated at 5W will burn out if:

    • A) Voltage exceeds 100V
    • B) Applied power exceeds 5W
    • C) Current flows for >1 hour
    • D) Connected to AC instead of DC

    Answer: Applied power exceeds 5W

    Explanation: Exceeding power rating causes overheating. Option A ignores power formula.