MDCAT Physics MCQ #568

In a Wheatstone bridge circuit, the unknown resistance is measured by balancing the bridge. What is the condition for balance?

MDCAT Physics MCQ #568

  1. Question 1

    Q1. In a Wheatstone bridge circuit, the unknown resistance is measured by balancing the bridge. What is the condition for balance?

    • A) The ratio of the resistances is equal to the ratio of the voltages
    • B) The ratio of the resistances is equal to the ratio of the currents
    • C) The sum of the resistances is equal to the sum of the voltages
    • D) The product of the resistances is equal to the product of the voltages

    Answer: The ratio of the resistances is equal to the ratio of the voltages

    Explanation: Balance occurs when resistance ratio equals voltage ratio