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Which conclusion we can obtain by the fa...

Which conclusion we can obtain by the fact that emf is induced in stationary conductor placed in time varying magnetic field ? Discuss characteristic of induced electric field.

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Faraday verified a fact that an emf is induced when a conductor is stationary and the magnetic field is changing by numerous experiments. In the case of a stationary conductor, the force on its charges is given by
`vecF=q[vecE+(vecvxxvecB)](because v=0)`
Thus, any force on the charge must arise from the electric field term E alone. Therefore, to explain the existence of induced emf or induced current, we must assume that a time-varying magnetic field generates an electric field.
However, we have to add that electric fields produced by static electric charges have properties different from those produced by time-varying magnetic fields.
We learnt that charges in motion (current) can exert force/torque on a stationary magnet. Conversely, a bar magnet in motion (or more generally, a changing magnetic field) can exert a force on the stationary charge (due to induced electric field).
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KUMAR PRAKASHAN-ELECTROMAGNETIC INDUCTION-Section D MCQs (MCQs asked in Competitive Exams )
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