A 60 W load is connected to the secondary of a transformer whose primary draws line voltage. If a current of 0.54 A flows in the load, what is the current in the primary coil? Comment on the type of transformer being used.
Here, Ps=60W,Is=0.54A,Vp=220V ∴Vs=IsPs=0.5460=111V As VpVs=IsIp. for an ideal transformer ∴Ip=VpVs×Is=220111×0.54=0.27A
