A galvanometer has a resistance of 30 ohm and a current of 2 mA is needed to give a
Channel: Doubtnut
Date: 2020-03-29

A galvanometer has a resistance of 30 ohm and a current of 2 mA is needed to give a full scale deflection. What is the resistance needed and how is it to be connected to convert this galvanometer (a) Into an ammeter of 0.3 A range ? (b) Into a volmeter of 0.2 V range ?