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Q.

A D.C. generator works on the principle of


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a

Ohm’s law

b

Joule's law of heating

c

Faraday's law of electromagnetic induction.

d

None of the above 

answer is C.

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Detailed Solution

A D.C. generator works on the principle of Faraday's law of electromagnetic induction.
When D.C. current is passed through a long straight conductor, a magnetising force and magnetic field are developed around it. Now, a current is induced within the coil by moving the wire. Thus, the electric generator works on the basis of electromagnetic induction.
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