A galvanometer has resistance 500 ohm. It is shunted so that its sensitivity decreases by 100 times. Find the shunt resistance.

Q: A galvanometer has resistance 500 ohm. It is shunted so that its sensitivity decreases by 100 times. Find the shunt resistance.

Sol: $\large Sensitivity \propto \frac{1}{Range}$

n = 100 ;

$\large S = \frac{G}{n-1} = \frac{500}{100-1}$

$\large S = \frac{500}{99}$

S = 5.05 ohm