dscribe galvonometer
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galvanometer :-
- galvanometer is a sensitive device which works on the same principal as that of an electric motor.
- some electrical measurements with it
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A galvanometer is an electromechanical instrument used for detecting and indicating an electric current. ... Galvanometers developed from the observation that the needle of a magnetic compass is deflected near a wire that has electric current flowing through it, first described by Hans Christian Ørsted in 1820......
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