Question

A D.C. generator is based on the principle of.

• A. magnetic effect ofcurrent
• B. lighting effect ofcurrent
• C. electrochemical induction
• D. electromagnetic induction

Answer 1

The correct option is D electromagnetic induction

The answer is D.
Electromagnetic induction is a process where a conductor placed in a changing magnetic field (or a conductor moving through a stationary magnetic field) causes the production of a voltage across the conductor. This process of electromagnetic induction, in turn, causes an electrical current - it is said to be the induced current.
Hence, the D.C. generator is based on the principle of electromagnetic induction.