A galvanoment of resistance 25 Omega gives full scale deflection for a current of 10 mA. What resistance is to be connected in its series so that it can work as a voltmeter of range 10 V ?

A galvanoment of resistance 25 Omega gives full scale deflection for a

1.	A galvanoment of resistance 25 Omega gives full scale deflection for a current of 10 mA. What resistance is to be connected in its series so that it can work as a voltmeter of range 10 V ?
Answer» `10000 Omega` `10025 Omega` `975 Omega` `9975 Omega` Solution :Here `R_G = 25 Omega , I_g = 10 mA = 10^(-2) A and V = 100 V` `:.` Series RESISTANCE `R = V/(I_g) - R_G = 100/(10^(-2)) - 25 = 9975 Omega`

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A galvanoment of resistance 25 Omega gives full scale deflection for a current of 10 mA. What resistance is to be connected in its series so that it can work as a voltmeter of range 10 V ?

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