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22 September, 04:45

4.

(**) How can a current be induced in a closed circuit without the

use of a battery or electrical power?

A. By moving the circuit into a high temperature field

B. By moving the circuit into a gravitational field

By moving the circuit into a magnetic field

D. By moving the circuit into a nuclear field

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Answers (1)
  1. 22 September, 04:57
    0
    C option bcz when a cicuit is placed in a magnetic field then current is infuced in it or emf is induced which is opposite to the electric current flowing through closed circuit
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