Question

Relation between voltage sensitivity and current sensitivity of a moving coil galvanometer is

Answer 1

We know,

Current sensitivity



Velocity sensitivity





Voltage sensitivity = Current sensitivity×Conductance

Increasing the current sensitivity of a galvanometer does not increase its voltage sensitivity.

For example :

If no of turns in coil = 2N

Then current sensitivity

⇒ Current sensitivity doubles

But also resistance doubles,

as R α length of wire

Then voltage sensitivity



⇒ Voltage sensitivity remains same.


hope it's help you.