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 and 50 % of power is lost, then the current in secondary will be

Step-by-step solution

V _ p =220 ~V , ~V _ s =2200 ~V , I _ p =5 ~A , I _ s = ? Power loss =50 % Efficiency of transformer ( ) is defined as the ratio of output power and input power %= P _ out P _ in 100= V _ s I _ s V _ p I _ p 100 aligned 50 &= 2200 I _ s 220 5 100 I _ s &=0.25 ~A aligned