A transformer has an efficiency of 80% and works at 10 ~V and 4 ~kW. If the secondary voltage is 240 ~V, then the current in the secondary coil is:

Electromagnetic Induction and Alternating Currents: JEE Main 2024 Physics question

JEE Main 2024 · 1 Feb, Evening shift · Q6690

JEE Main 20241 Feb, Evening shiftPhysicsMediumElectromagnetic Induction and Alternating Currents149× since 2002

A transformer has an efficiency of

80 \%

and works at

10 \mathrm{~V}

and

4 \mathrm{~kW}

. If the secondary voltage is

240 \mathrm{~V}

, then the current in the secondary coil is :