Question

A galvanometer (G) is shunted such that only $\frac{1}{11}$th of the main current flows through it. If G=150 $\Omega$ the shunt resistance is

• A. $15\Omega$
• B. $20\Omega$
• C. $10\Omega$
• D. $25\Omega$

Answer 1

The correct option is A $15\Omega$

$S=\frac{G}{\frac{i}{i_g}-1}=\frac{150}{11-1}=15\Omega$