Question

the coils of a step down transformer have 500 and 5000 turns. in the primary coil an ac of 4 ampere at 2200 volts is sent. the value of the current and potential difference in the secondary coil will be

Answer 1

Correct Answer - C

Step-by-step explanation:

NpNs=Vpvs=isipNpNs=Vpvs=isip. The transformer is step-down type, so primary coil will have more turns. Hence

5000500=2200Vs=is4⇒Vs=220V,is=40amp5000500=2200Vs=is4⇒Vs=220V,is=40amp