Question

Calculate the polarity of the capacitor $C$ connected to the coil, which is situated between two bar magnetic moving as shown in the figure.

Answer 1

Hint: Electromagnetic induction, also known as induction, is a process in which a conductor is placed in a specific position and the magnetic field varies or remains stationary while the conductor moves. A voltage or ELECTROMOTIVEFORCE (Electromotive Force) is created across the electrical conductor as a result of this.

Complete answer:
We know that if a coil is subjected to the magnet, an electromotive force gets induced which generates the current of the coil. Lenz's law suggests that the electromotive force induced across the coil is in such a manner that it opposes the cause i.e. the relative motion of the magnet producing the electromotive force across it. Because the current created in the coil opposes the magnet's approach. As a result, the left face of the coil will act as the North Pole, while the right face will operate as the South Pole. As a result, the current in the coil will be anticlockwise as seen from the left, making plate A of the capacitor positive and plate B negative.

Note: We need to keep in mind that in electromagnetism, Lenz's law states that an induced electric current flows in the opposite direction as the change that caused it. As a result, just a little amount of work is required to push the magnet into the coil and to pull it out against the magnetic force of the induced current.