MDCAT Physics MCQ #528

In a potentiometer experiment, why is a longer wire preferred over a shorter one for precise measurement?

MDCAT Physics MCQ #528

  1. Question 1

    Q1. In a potentiometer experiment, why is a longer wire preferred over a shorter one for precise measurement?

    • A) Higher resistance reduces current
    • B) Greater length increases sensitivity
    • C) Wire material becomes uniform
    • D) Easier to measure small EMFs

    Answer: Greater length increases sensitivity

    Explanation: Length increases voltage gradient precision. Option D describes outcome, not reason.