Transformers - NEET Physics Questions
Question 1: moderate

In step-down transformer of turn ratio 6 : 1, an alkali accumulator of 12 V; 3A is connected to the primary. Then the voltage developed in its secondary is :

1. 2V
2. 72V
3. 2/3 V
4. zero
View Answer

The voltage developed in the secondary is zero.

A transformer operates on the principle of mutual induction, which requires a changing magnetic flux produced by Alternating Current (AC). Since an alkali accumulator provides Direct Current (DC), the magnetic flux remains constant, and no electromotive force (EMF) is induced in the secondary coil.