Question

What is electromotive force..? Wrie farad's first and second law for electromagnetic induction..!​

Answer 1

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Q. What is Electromotive force ?

⟹ The amount of energy required to drive a unit positive charge through an external circuit connected to a cell is called electromotive force, or EMF. ... When no current is drawn from a cell i.e., when the cell is in open circuit, the potential difference between the terminals of the cell is called its electromotive force.

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⠀⠀First Law :-

⟹ Faraday's first law of electromagnetic induction states that whenever the flux of magnetic field through the area bounded by a closed loop changes, an emf is produced in the loop. The flux may be changed in a number of ways. In any case, as long as the flux keeps changing, the emf is present.

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⠀⠀Second Law :-

⟹ Faraday's second law of electromagnetic induction states that the magnitude of induced emf in a closed circuit is directly proportional to the rate of change of magnetic flux linked with the circuit.

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