PHYSICS · Single correct · CBSE · Physics · Moving Charges and Magnetism · Moving Charges and Magnetism
Problem
A galvanometer, whose resistance is 50 ohm, has 25 divisions in it. When a current of 4×10−4 A passes through it, its needle (pointer) deflects by one division. To use this galvanometer as a voltmeter of range 2.5 V, it should be connected to a resistance of :
(1) 250 ohm
(2) 200 ohm
(3) 6200 ohm
(4) 6250 ohm