Question

Two circular coils $P$ and $Q$ are kept close to each other, of which coil $P$ carries a current. If coil $P$ is moved towards $Q$, will some current be induced in coil $Q$? Give reason for your answer and name the phenomenon involved.

Answer 1

Hint: The phenomena behind electrical generators is the EMF created by Faraday's law of induction owing to relative movement of a circuit and a magnetic field. An electromotive force is generated when a permanent magnet is shifted relative to a conductor, or vice versa. When a wire is linked to an electrical load, current flows, and electrical energy is created, converting mechanical energy to electrical energy.

Complete answer:
The generation of an electromotive force across an electrical conductor in a changing magnetic field is known as electromagnetic or magnetic induction. Induction was discovered in 1831 by Michael Faraday, and it was mathematically defined as Faraday's law of induction by James Clerk Maxwell. The direction of the induced field is described by Lenz's law.

Faraday's law was eventually extended to become the Maxwell–Faraday equation, one of Maxwell's four electromagnetic equations. Electrical components like inductors and transformers, as well as devices like electric motors and generators, have all benefited from electromagnetic induction. Current will be induced in coil Q when coil P is pushed towards coil Q.

This is because when P moves, the magnetic field associated with Q grows, causing a current to flow. Electromagnetic induction is a phenomenon. When P is shifted away from Q, the field associated with Q decreases, and a current in the opposite direction is produced. Moving a magnet towards or away from a coil (b) moving a coil towards or away from a magnet (c) rotating a coil inside a magnetic field can all produce current in a coil.

Note: The motional EMF created by a magnetic force on a moving wire (see Lorentz force) and the transformer EMF generated by an electric force owing to a changing magnetic field (according to the differential version of the Maxwell–Faraday equation) are described by Faraday's law. In 1861, James Clerk Maxwell attracted attention to the many physical phenomena. This is said to be the first time in physics when a basic law is used to explain two seemingly unrelated occurrences.