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Q.

A milliammeter of range of 10 mA gives full deflection for a current of 100 mA. When a shunt of 0.1Ω is connected in parallel to it. The coil of milliammeter has a resistance of :

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a

0.9Ω

b

c

1.1Ω

d

0.11Ω

answer is A.

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Detailed Solution

i−igS=ig⋅G(100−10)(0.1)=10G⇒G=0.9 Ω
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