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Q.
The magnitude of the induced emf in a circuit is equal to the time rate of change of magnetic flux through the circuit, is statement of
Electromagnetic Induction
Solution:
The magnitude of the induced emf in a circuit is equal to the time rate of change of magnetic flux through the circuit. Mathematically, the induced emf is given by
$\varepsilon=-\frac{d \phi_{B}}{d t}$
The negative sign indicates the direction of $\varepsilon$ and hence the direction of current in a closed loop.
This is statement of Faraday's law of electromagnetic induction. Fleming's rules, Newton's third law deal with forces and their directions.