GEOLOGY

Detailed explanation-1: -A galvanometer is basically a device or instrument for detecting even a small electrical current or a function of the current by making deflection in a moving coil. The deflection is a mechanical rotation happening due to the forces as a result of a current.

Detailed explanation-2: -galvanometer, instrument for measuring a small electrical current or a function of the current by deflection of a moving coil. The deflection is a mechanical rotation derived from forces resulting from the current.

Detailed explanation-3: -Reason: Galvanometer gives a full-scale deflection for a current of the order of micro ampere.

Detailed explanation-4: -Galvanometer is the device which is used for measuring small currents due to changing magnetic field.

Detailed explanation-5: -Small currents can also be measured by current integration. Two methods are used for collecting charges on a known capacitor and measuring the voltage. The first uses an electrometer as a voltmeter with a capacitor shunting the input. The second incorporates the capacitor into the feedback of the electrometer.