Question

A current of $5$ A is flowing at $220$ V in the primary coil of a transformer. if the voltage produced in the secondary coil is $2200$ V anf 50% of power is lost, then the current in secondary will be

Answer 1

Vp=220V,

Vs=2200V,

Ip=5A,Is=?

Power loss = 50% Efficiency of transformer (η)

is defined as the ratio of output power and input power ie, η50=$\frac{2200\times I_s}{220\times 5}\times 100I_s$

Is=0.25A