QJEEM22Phe02c: JEE Main 2022 Physics - Class 12 JEEM22Phe02c Solution: A 72 galvanometer is shunted by a resistance of 8 . The…

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A 72 $\Omega$ galvanometer is shunted by a resistance of 8 $\Omega$ . The percentage of the total current which passes through the galvanometer is :

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JEE Main 2022 (Online) 27th June Morning Shift Physics - Current Electricity Question 145 English Explanation

From the given setup

$y \times {R_G} = (x - y)({R_S})$

$\Rightarrow y \times 72 = (x - y) \times 8$

$\Rightarrow 9y = x - y$

$\Rightarrow y = {x \over {10}}$ or 10% of x

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