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Discussion :: ohms-law

  1. You are measuring the current in a circuit that is operated on an 18 V battery. The ammeter reads 40 mA. Later you notice the current has dropped to 20 mA. How much has the voltage changed?

    2. A.
    9 V
    B.
    900 mV
    C.
    0 V
    D.
    18 V

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    Answer : Option A

    Explanation :

    No answer description available for this question.

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