Physics

Physics

Problem

Which one of the following expressions gives the magnitude of the emf E\mathcal E induced in a single loop when the magnetic flux Φ\Phi linked with it changes with time? a) E=12∣dΦdt∣\mathcal E = \dfrac{1}{2}\left|\dfrac{d\Phi}{dt}\right| b) E=∣dΦdt∣\mathcal E = \left|\dfrac{d\Phi}{dt}\right| c) E=−dΦdt\mathcal E = -\dfrac{d\Phi}{dt} d) E=BA dθdt\mathcal E = BA\,\dfrac{d\theta}{dt}

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