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

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10000 Ω

9000 Ω

222 Ω

111 Ω

answer is D.

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Detailed Solution

By using iig =1+ GS⇒ 1100 × 10−3 =1+1000S ⇒ S=10009=111Ω

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