JEE Main 202523 Jan, Evening shiftPhysicsMediumMagnetic Effects of Current and Magnetism165× since 2002
A galvanometer having a coil of resistance 30 need 20 mA of current for full-scale deflection. If a maximum current of 3 A is to be measured using this galvanometer, the resistance of the shunt to be added to the galvanometer should be , where X is