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Why does the galvanometer shows single …

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Why does the galvanometer shows single side deflection in a potentiometer

    • Posted by Hridya Suresh 7 years, 11 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Abc Efg 7 years, 11 months ago

    In moving coil galvanometer, there is a current sensitive rectangular coil suspended in radial magnetic field. when small current ( 10 - 100 μA ) is passed in the coil it experiences a torque and deflect. This deflection is directly proportional to Current. A pointer is attached to the coil that moves in a graduated scale to indicate the current/voltage reading. the deflection is made one side to cover a long range of current/voltage. A high resistance connected in series with the galvanometer makes it as voltmeter to measure voltage. A Low resistance connected across the terminals of galvanometer makes it as Ammeter to measure current.

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