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Faraday's law - Electromagnetic Induction Video Lecture | Physics for BMAT (Section 2)
FAQs on Faraday's law - Electromagnetic Induction Video Lecture - Physics for BMAT (Section 2)
| 1. What is Faraday's law of electromagnetic induction? |  |
Ans. Faraday's law of electromagnetic induction states that a change in the magnetic field within a closed loop of wire induces an electromotive force (EMF) in the wire. This induced EMF causes an electric current to flow in the wire, resulting in the generation of electrical energy.
| 2. How does electromagnetic induction work? | |
Ans. Electromagnetic induction works by the interaction between a magnetic field and a conductor. When there is a change in the magnetic field, the magnetic flux through the conductor changes. This change in flux induces an EMF in the conductor according to Faraday's law, leading to the generation of an electric current.
| 3. What are the applications of Faraday's law of electromagnetic induction? | |
Ans. Faraday's law of electromagnetic induction has numerous applications in our daily lives. Some of the notable applications include the functioning of generators, transformers, electric motors, induction cooktops, and wireless charging technologies. It also forms the basis of various electrical devices and systems.
| 4. Can you explain the difference between electromagnetic induction and electrostatic induction? | |
Ans. Electromagnetic induction and electrostatic induction are two different phenomena. Electromagnetic induction involves the creation of an electric current due to a changing magnetic field, as described by Faraday's law. In contrast, electrostatic induction is the redistribution of electric charges in an object without any physical contact, typically caused by the presence of a charged object nearby.
| 5. How does Faraday's law relate to Lenz's law? | |
Ans. Faraday's law of electromagnetic induction and Lenz's law are closely related. Faraday's law states that a change in the magnetic field induces an EMF in a conductor. Lenz's law, on the other hand, states that the induced current in a conductor will always oppose the change that caused it. In other words, Lenz's law provides the direction of the induced current, which is such that it creates a magnetic field opposing the change in the original magnetic field.
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