CBSE Class 12-science Answered
Give reason for one sided deflection in galvanometer in potentiometer arrangement and explain in detail
Asked by modi72879 | 17 Jan, 2018, 08:43: AM
Expert Answer
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.
Answered by Thiyagarajan K | 17 Jan, 2018, 03:41: PM
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