When the North pole of a magnet is brought towards one end of the coil, the induced current flows in the coil in such a direction that the end of the coil near the magnet becomes a north pole which repel the magnet and opposes the motion of the north pole of the magnet towards the coil, thus direction of induced current is anti-clockwise .
This phenomenon is known as electromagnetic induction and was discovered by Michael Faraday in 1831 . It is based on Faraday's law which relates the rate of change of magnetic flux through a loop to the magnitude of the electro-motive force induced in the loop .
The direction of current in a coil can be determined by using Lenz's law which states that the current in a coil will be induced in such a direction that it will oppose the external magnetic field .
The direction of current in a coil can also be determined by using Fleming's right-hand rule. According to this rule, if we stretch our thumb, forefinger and middle finger mutually perpendicular to each other such that forefinger points in the direction of magnetic field and thumb points in the direction of motion of conductor then middle finger will point in the direction of induced current .
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- https://www.doubtnut.com/question-answer-physics/the-north-pole-of-a-bar-magnetic-is-moved-towards-a-coil-along-the-axis-passing-through-the-centre-o-130892103
- https://edurev.in/question/1884834/The-north-pole-of-a-magnet-is-brought-near-a-coil--The-induced-current-in-the-coil-as-seen-by-an-obs
- https://www.khanacademy.org/science/physics/magnetic-forces-and-magnetic-fields/magnetic-flux-faradays-law/a/what-is-faradays-law
- https://openstax.org/books/physics/pages/20-3-electromagnetic-induction
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