Describe the working principle of a moving coil galvanometer. Why is it necessary to use (i) a radial magnetic field and (ii) a cylindrical soft iron core in a galvanometer? Write the expression for current sensitivity of the galvanometer.

Describe the working principle of a moving coil galvanometer. Why is necessary to use (i) a radial magnetic field and (ii) a cylindrical soft iron core in a galvanometer ? Write the expression for current sensitivity of the galvanometer . Can a galvanometer as such be used for measuring the current ? Explain.

Discuss the working principle of a moving coil galvanometer.

Write principle of moving coil galvanometer.

What is the working principle of a moving coil galvanometer?

Write the underlying principle of a moving coil galvanometer.

Define current sensitivity of a moving coil galvanometer.