Question 186: Current Electricity

Question

The number of turns of the coil of a moving coil galvanometer is increased in order to increase current sensitivity by $50 \%$. The percentage change in voltage sensitivity of the galvanometer will be :

Accepted Answer

Current sensitivity $=$ Voltage sensitivity $	imes R$
Current sensitivity is made $1.5$ times.
$R$ also increase $1.5$ times.
Hence voltage sensitivity $=\frac{1.5 	imes 	ext { current sensitivity }}{1.5 	imes R}$
$$
=	ext { no change }
$$

Answer

$0 \%$

Answer

$75 \%$

Answer

$100 \%$

Answer

$50 \%$

Current Electricity

The number of turns of the coil of a moving coil galvanometer is increased in order to increase current sensitivity by 50 \%. The percentage change in voltage sensitivity of the galvanometer will be :

Choose the correct answer: