How much current is drawn by the primary coil of that transformer which has 220 Omega impedance?

How much current is drawn by the primary coil of a transformer which steps down 220 V to 22 V to operate device with an impedance of 220 ohm.

(i) Draw a labelled diagram of a step-down transformer. State the principle of its working. (ii) Find the ratio of primary and secondary currents in terms of turn ratio in an ideal transformer. (iii) How much current is drawn by the primary of a transformer connected to 220V supply when it delivers power to a 110V-550W refrigerator ?

Calculate current drawn by primary coil of a transformer, Which steps down 200 V to 20 V to operate a device of 20 ohm resistance. Assume efficiency of transformer 80 %.

State the principle of working of a transformer. (b) Define efficiency of a transformer. (c ) State any two factors that reduce the efficiency of a transformer. (d) Calculate the current drawn by the primary of a 90% efficient transformer which steps down 220 V to 22 V , if the output resistance is 440 Omega .

How much current is drawn by the motor of 0.5 hp from 220 volt supply?

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

A current time curve is shown in the following diagrame . This type of current is passed in the primary coil of transformer . The nature of induced emf in the second ary coil will be :-

A current of 2A is flowing at 220 V in the primary coil of a transformer. If current in the secondary coil is 1 A and efficiency of the transformer is 80% then the voltage produced in the secondary coil will be