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30 August, 14:20

If one doubles the emfs in a circuit and doubles the resistances in the circuit at the same time, what happens to the currents through the resistors? Assume there are only emfs and resistors in the circuit.

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  1. 30 August, 16:37
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    Same

    Explanation:

    Let R be the resistance of the cell and E be the emf.

    Let i be the current in the circuit.

    i = E / R ... (1)

    Now emf and resistance be doubled.

    so, i' = 2E/2R = E/R

    So, i' = i (From equation (1)

    Current remains same.
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