Increasing Current Sensitivity of Galvanometer – Rankers Physics
Topic: Magnetic Effects of Current
Subtopic: Magnetic Properties of Matter

Increasing Current Sensitivity of Galvanometer

To increase the current sensitivity of a moving coil galvanometer, we should:
decrease number of turns in coil
decrease area of cross section of the coil
increase torsional constant of spiral springs
None of the above

Solution:

Current sensitivity is given by \(I_s = \frac{NBA}{C}\). To increase it, we need to increase \(N\), \(B\), \(A\) or decrease \(C\). None of the options perform these changes.

Leave a Reply

Your email address will not be published. Required fields are marked *