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JEE Main Electromagnetic Induction and Alternating Current Revision Notes

JEE Main Electromagnetic Induction and Alternating Current Revision Notes - PDF Download

The production of an electromotive force (i.e., voltage) across an electrical conductor in a changing magnetic field is known as electromagnetic or magnetic induction.

Michael Faraday discovered the induction in 1831, and it was mathematically described by James Clerk Maxwell as Faraday's law of induction. The direction of the induced field was described by Lenz's law. Later, the Faraday's law was generalized into the Maxwell–Faraday equation, one of the four Maxwell equations in his theory of electromagnetism.

JEE Main Electromagnetic Induction and Alternating Current Revision Notes part-1
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FAQ (Frequently Asked Questions)

Q1. Explain the Relation Between AC and Electromagnetic Induction.

Ans: Electromagnetic induction occurs when a circuit with an alternating current flowing through it generates a current in another circuit simply by being placed nearby.


AC can be defined as the electricity which is flowing through power lines and home writing also as opposed by DC which we receive from batteries.

Q2. Explain the Conditions for Electromagnetic Induction.

Ans: Induction or electromagnetic induction is the process in which a conductor is put in a particular position and the magnetic field is either fixed or varying and the conductor is moving. Across the electrical conductor, this produces the voltage or EMF.

Q3. What Should Change for the Electromagnetic Induction to Occur in a Coil Which is Wired?

Ans: For the electromagnetic induction to occur the field through the coil must change. The voltage which is induced in the coil is proportional to the number of loops and the rate of change of the magnetic field.

Q4. Who gave the Principle of Electromagnetic Induction?

Ans: The principle of electromagnetic induction was first discovered by Michael Faraday in the year 1830.

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