The sensitivity of a Galvenometer of resistance $171\,\Omega $ becomes $20\,times$ when we used shunt of $x \,\Omega .$ Find $x$ ................. $\Omega$
Medium
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$S=\frac{i_{g}}{i-i_{g}} G=\left(\frac{1}{i / i_{g}-1}\right) G \Rightarrow S=\left(\frac{1}{20-1}\right) 171$
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