Electrical Induction

Question 1

What happens when direct current is turned on and off through one of the coils of a transformer?

Answer 1

When a DC voltage is applied to the transformer’s primary coil, a constant current results in constant flux. In the primary circuit, the induced EMF will be zero. The flux produced is inversely proportional to the frequency of the DC voltage, which has no frequency. The transformer core saturates as a result of this.

Question 2

Whats self induction?

Answer 2

The tendency of a coil to resist changes in current in itself.