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A solenoid is connected in series with a resistor, as shown in the figure below.
As the magnet is being moved into the solenoid, thermal energy is transferred in the resistor. Use laws of electromagnetic induction to explain the origin of this thermal energy
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Moving the magnet into the solenoid induces e.m.f. which gives rise to current in the solenoid. The induced current in the solenoid creates flux in the solenoid that opposes the motion of the magnet.
Therefore, work is done or energy is needed to move the magnet into the solenoid. This energy needed causes the heating effect in the resistor.
Thus, the induced current gives the heating effect in the resistor which comes from the work done in moving the magnet into the solenoid.
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