JEE Main 202226 Jun, Morning shiftPhysicsMediumElectromagnetic Induction and Alternating Currents149× since 2002
A 10 , 20 mH coil carrying constant current is connected to a battery of 20 V through a switch. Now after switch is opened current becomes zero in 100 s. The average e.m.f. induced in the coil is ____________ V.