1 Faraday’s Law of Electromagnetic Induction.pptx

faraday s law
first and second law

1. ABOUT MYSELF INTRODUCTION NAME : AKASH SHARMA Adm no: 6660 Batch: II ELECTRICIAN CITS NSTI VIDYANAGAR HYDERABAD

2. TOPIC - Faraday’s Law of Electromagnetic Induction Michael Faraday(1971-1867) Michael Faraday was a British physicist and chemist who is best known for his discoveries of Electromagnetic Induction and the law of Electrolysis .

3. Objectives Faraday’s Law Electroctromagnetic Induction Law’s of Faraday Lenz’s Law Applications of Faraday’s law

4. “ Electromagnetic Induction was Discovered by Michal Faraday since 1831” The phenomenon of production of Induced EMF in a coil by changing magnetic flux linked with a coil is called Electromagnetic Induction. What is Electromagnetic Induction?

5. First Law of Faraday’s Electromagnetic Induction Change of magnetic flux linked to a coil Induce an EMF across a coil.

6. Second Law of Faraday’s Electromagnetic Induction The EMF induced across the coil is equal to Rate of change of flux in a coil. Where, E = Magnetude of EMF induced in Conductor d ϕ / dt = Rate of change of flux Negative sign shows that EMF induced always oppose the change in flux. If number of turns N in a coil :

7. “Discovered in 1834 by Amil Lenz” The direction of EMF induced is in the process of electromagnetic induction is always such that its tends to flow of current which opposes the cause of producing it. Magnitude of EMF induced in conductor : Negative sign indicates that the direction of EMF induced to opposes to cause of producing it. 1’st law = negative sign shows 2’nd law = conservation of energy Lenz’s Law

8. Applications of Faraday’s Law Electric Generators Electric Motors Transformers Induction Cooktops

9. Doubts?

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