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    Question

    The kelvin double bridge is used

    for______
    A Measuring high resistance. Correct Answer Incorrect Answer
    B Measuring low resistance. Correct Answer Incorrect Answer
    C Measuring low inductance. Correct Answer Incorrect Answer
    D Measuring high inductance. Correct Answer Incorrect Answer

    Solution

    The Kelvin Double Bridge is a modified version of the Wheatstone bridge, specially designed to measure very low resistances with high accuracy. It eliminates the effect of lead and contact resistances, which become significant when resistance values are in the micro-ohm or milli-ohm range. This makes it extremely useful in testing resistance of wires, shunts, and contacts.

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