Question

An inductor is connected to a battery through a switch. Explain why the emf induced in the inductor is much larger when the switch is opened as compared to the emf induced when the switch is closed.

Answer 1

Explanation:

• Once that switch is disabled, the current in the circuit takes little time to rise.
• The flux is that as a result of this current growth; hence an emf is formed.
• On the other side, there is no direction for the current to float when we open the switch; hence it suddenly falls to zero.
• This rate of current decline is significantly higher than the rate of current growth when the switch is closed.
• So when the toggled is enabled the emf is more triggered.