What is the working principle of a moving coil galvanometer?

Depending on the requirement, a moving coil gal vanometer can be used as a current detector, an ammeter or a voltmeter. : a) Write the principle of a moving coil galvanometer. B) Using a suitable diagram amive at an expres sion for the current sensitivity of a moving coil galvanometer

What is the working principle of AC generator?

What is the use of moving coil galvanometer?