The current flowing through a coil of resistance $900\, ohms $ is to be reduced by $90\,\%$. What value of shunt should be connected across the coil ............. $\Omega $
Medium
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${i_g} = (100 - 90)\% $ of $i = \frac{i}{{10}}$
$ \Rightarrow $ Required shunt $S = \frac{G}{{(n - 1)}} = \frac{{900}}{{(10 - 1)}} = 100\,\Omega $
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