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A galvanometer has a coil of resistance $100 Ω$ showing a full scale deflection of $50 μA$ . The resistance to be used to use it as an ammeter of range 10 mA is

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$0.5 Ω$ in series

$100 Ω$ in series

$100 Ω$ in parallel

$0.5 Ω$ in parallel

answer is B.

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Detailed Solution

$S = \frac{G}{n - 1} and n = \frac{I}{I_{g}}$

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