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Q.

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

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a

9000Ω

b

10000Ω

c

11.2Ω

d

111Ω

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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