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Question

(a) What is electromagnetic induction
(b) Describe one experiment to demonstrate the phenomenon of electromagnetic induction. 


Solution

(i) Electromagnetic induction is defined as the phenomenon in which an emf is induced in a conductor by varying the magnetic flux associated with it. 

(ii) Suppose two circular coils are placed close to each other.

When current changes in one coil, the magnetic field produced by the current also changes. When the changing magnetic field is experienced by the other coil, an e.m.f. is induced in it. If it is a closed circuit, current starts flowing through it which can be detected using a galvanometer.


Physics
Concise Physics
Standard X

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