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Electro-magnetic induction and damping


This experiment has been designed and developed by ALKAAD, especially for Indian Institute of technology, Kanpur.

The experimental objective is stated below:
A magnet (comprising of 8 thin circular magnets) attached to an oscillating system are periodically passed through a coil generating a series of emf pulses. This experiment allows for the quantitative verification of Faraday’s Law, with the minimum of errors, thereby revealing many features of the under-lying mechanics. When electro-magnetic damping is activated by short-circuiting the coil a distinctive linear decay of oscillation amplitude is observed.

In this experiment several parameters can be varied:

For setting up the experiment, the knurled nut on the right hand side of the hanger can be unscrewed to allow the metal rod holding the magnets to be passed through thecentre of the coil. Realignment of both parts of the hanger and retightening of the knurled nut is required. The coil need to be positioned onto the coil table such that the magnets do not touch the insides of the coil during oscillation.

The hangar may be moved to one side and then let go so that the hanger along with the magnets oscillates within the centre of the coil.

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experiments  >>   the current balance experiment