The current flowing in a coil of resistance $90 \,\Omega$ is to be reduced by $90\%$. What value of resistance should be connected in parallel with it ............. $\Omega $
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(d) ${i_g} = \frac{i}{{10}}$ $ \Rightarrow $ Required shunt $S = \frac{G}{{(n - 1)}} = \frac{{90}}{{(10 - 1)}} = 10\,\Omega $
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