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a galvanometer with a coil of resistance 12ohm shows full scale deflection for a current of 2.5 mA . How will you convert it into a Voltmeter of range 7.5V ? Also find the total resistance of voltmeter formed.​

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ANSWER:

A galvanometer with a coil of resistance 120 ohm shows full scale deflection for a current of 2.5 mA. ... Galvanometer can be converted into an ammeter bu putting a shunt in parallel with galvanometer. Therefore, By connecting a shunt of 0.04 Ω across the given galvanometer, we get an ammeter of RANGE of 0 to 7.5 A.

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