1.

A galvanometer with a coil of resistance 12.0 Q showsa full-scale deflection for a current of 2.5 mA. Howwill you convert it into (a) an ammeter of range 0 to7.5 A, (b) a voltmeter of range 0 to 10.0 V?-3Ans. (a) By connecting a shunt of 4.00 x 10 2(b) by connecting a 3988 S2 in series

Answer»

S=10^-3/0.0075*12=5*10^-3ohm

hence R=3988ohm



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