NDA 2022 Physics question

A DC generator works on the principle of

(A)Ohm's law
(B)Joule's law of heating
(C)Faraday's laws of electromagnetic inductionCorrect
(D)None of the above

Answer: (C)

Solution

In a generator a coil is rotated in a magnetic field, so the magnetic flux through it changes continuously and an emf is induced in it; this is electromagnetic induction,

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Question ID VK-032241