Question

Problem 11

Answer 1

Given information

The main purpose for which a transformer is used.

 

 

Step-by-step explanation

Step 1.

A transformer transfers electric power from one circuit to another circuit.

A transformer has primary and secondary coil. Let the alternating emf applied across primary coil be  and alternating emf across secondary coil be . and be the current in primary and secondary coil.

The transformer transfers power from primary to secondary coil. Assuming there is no loss in power then