> Q. A voltmeter of resistance $ 1000Omega $ gives full scale deflection when a current of $ 100mA $ flows through it. The shunt resistance required across it to enable it to be used as an ammeter reading $ 1A $ at full scale deflection is – LIVE ANSWER TODAY

Q. A voltmeter of resistance $ 1000Omega $ gives full scale deflection when a current of $ 100mA $ flows through it. The shunt resistance required across it to enable it to be used as an ammeter reading $ 1A $ at full scale deflection is

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A voltmeter of resistance $ 1000Omega $ gives full scale deflection when a current of $ 100mA $ flows through it. The shunt resistance required across it to enable it to be used as an ammeter reading $ 1A $ at full scale deflection is

Solution:

By using $ frac{i}{{{i}_{g}}}=1+frac{1000}{S} $ $ frac{i}{100times {{10}^{-3}}}=1+frac{1000}{S} $ $ Rightarrow $ $ S=frac{1000}{9}=111Omega $

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