JEE Main 202124 Feb, Morning shiftPhysicsMediumElectromagnetic Induction and Alternating Currents149× since 2002
A common transistor radio set requires 12 V (D.C.) for its operation. The D.C. source is constructed by using a transformer and a rectifier circuit, which are operated at 220 V (A.C.) on standard domestic A.C. supply. The number of turns of secondary coil are 24, then the number of turns of primary are ___________.