A power transformer (step up) with an `1:8` turns ratio has `60 Hz,120 V` across the primary, the load in the secondary is `10^(4) Omega`.The current in the secondary is

A transformer of efficiency 90% has turns ratio 1 : 10. If the voltage across the primary is 220 V and current in the primary is 0.5 A, then the current in secondary is

A transformer of efficiency 90% has turns ratio 10 : 1. If the voltage across the primary is 220 V and current in the primary is 0.5 A, then the current in secondary is

A transformer has 140 turns in the primary and 280 turns in the secondary. If current in primary is 4A, then the current in secondary will be …………

A transformer has 500 turns in the primary and 1000 turns in its secondary. The primary voltage is 200 V and load in secondary is 100 ohm. Calculate the current in primary assuming it to ideal transformer.

In a step-up transformer the turn's ratio is 10. If the frequency of the current in the primary coil is 50 Hz then of the frequency of the current in the secondary coil will be

A step up transformer operates on a 230V line and a load current of 2A. The ratio of the primary and secondary windings is 1 : 25 . The current in the primary is

A transformer has 500 turns in its primary and 1000 turns in its secondary winding. The primary voltage is 200 V and the load in the secondary is 100 2. Calculate the current in the primary, assuming it to be an ideal transformer.