A circular coil lies flat on a horizontal surface. a bar magnet is held above the center of the coil with its north pole pointing down. if the magnet is dropped from this position what is the direction of the induced current in the coil, as viewed from above?

Question

07-08-2017
Physics

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A circular coil lies flat on a horizontal surface. a bar magnet is held above the center of the coil with its north pole pointing down. if the magnet is dropped from this position what is the direction of the induced current in the coil, as viewed from above?

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Erythrosin17 Erythrosin17 · Answer 1 · 2017-08-18T02:58:48+02:00

If the magnet is dropped from this position, then the direction of the induced current in the coil would be counterclockwise. This is by virtue of Lenz's law allows us to predict the direction of the induced current in a circuit. It is also known as the right hand rule. It states that the current that is being induced in a particular circuit is due to the change in the magnetic field in order to oppose the change in the magnetic flux and also to apply an mechanical force that is opposing the motion. In this case, the current is pointed to the direction of the pole, to oppose this the induced current should be directed counterclockwise.