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The magnetic flux in a closed circuit of resistance 20 Ω varies with time t as Φ = 4t3 + 2t2 – 15t + 3. Calculate the magnitude of induced emf at t = 1s.

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MCQs on faraday and henry experiments, magnetic flux, induction faradays law, lenz law, energy conservation, motional electromotive force, energy consideration quantitative study, eddy currents and inductance.


The magnetic flux in a closed circuit of resistance 20 Ω varies with time t as Φ = 4t<sup>3</sup> + 2t<sup>2</sup> – 15t + 3. Calculate the magnitude of induced emf at t = 1s.






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