MDCAT Physics MCQ #513

A Wheatstone bridge balances when R1/R2 = R3/R4. How does a potentiometer differ in principle?

MDCAT Physics MCQ #513

  1. Question 1

    Q1. A Wheatstone bridge balances when R1/R2 = R3/R4. How does a potentiometer differ in principle?

    • A) Measures current balance
    • B) Measures potential difference
    • C) Balances EMF without current
    • D) Uses AC instead of DC

    Answer: Balances EMF without current

    Explanation: Potentiometer balances EMF with no current. Bridge compares resistances with current flow.