Table of Contents
Charging of Insulators
Since charge cannot flow through insulators, neither conduction nor induction can be used to charge, insulators, so in order to charge an insulator friction is used. Whenever an insulator is rubbed against a body exchange of electrons takes place between the two. This results in appearance of equal and opposite charges on the insulator and the other body. Thus the insulator is charged.
For example rubbing of plastic with fur, silk with glass causes charging of these things.
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COULOMB’S LAW
Last modified on:3 years agoReading Time:18MinutesCOULOMB’S LAW: Two point electric charges q1 and q2 at rest, separated by a distance r exert a force on each other whose magnitude is given by If between the two charges there is free space then Where ε0 is the absolute electric permittivity of the free space and ε0 =…
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If we comb our hair on a dry day and bring the comb near small pieces of paper, the comb attracts the pieces, why?
Last modified on:4 years agoReading Time:2Minutes If we comb our hair on a dry day and bring the comb near small pieces of paper, the comb attracts the pieces, why? Answer: This is an example of frictional electricity and induction. When we comb our hair, it gets positively charged by rubbing. When the comb is brought…
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Can two similarly charged bodies attract each other?
Last modified on:4 years agoReading Time:1Minute Yes, when the charge on one body Q is much greater than that on the other q and they are close enough to each other so that force of attraction between Q and induced charge on the other exceeds the force of repulsion between Q and q. However, two similar…
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Class 12 Business Studies PPT for Online Teaching
Last modified on:3 years agoReading Time:3MinutesClass 12 Business Studies PPT for Online Teaching Here we are providing class 12th Business Studies PPTs. Make your online teaching interesting with our interactive PowerPoint presentations for Accountancy. A must buy for teachers teaching online. Class 12 Business Studies PPT for Online Teaching Get PowerPoint presentations for complete Class 12 Business…
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Assertion Reason Questions for Class 10 Maths Chapter 10 Circles
Last modified on:3 years agoReading Time:2MinutesAssertion Reason Questions for Class 10 Maths Chapter 10 Circles Directions: (a) If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.(b) If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.(c) If Assertion is correct but Reason is incorrect.(d)…
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Assertion Reason Questions for Class 10 Maths Chapter 5 Arithmetic Progression
Last modified on:3 years agoReading Time:3MinutesAssertion Reason Questions for Class 10 Maths Chapter 5 Arithmetic Progression Directions:(a) If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.(b) If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.(c) If Assertion is correct but Reason is incorrect.(d)…
