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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CBSE Class 11 Physics Syllabus 2023-24
Last modified on:3 years agoReading Time:32Minutes[PDF] Download CBSE Class 11 Physics Syllabus 2023-24 The CBSE syllabus for Class 11 Physics is an extremely valuable resource for students who want to excel in their studies. This syllabus not only provides information on the different topics and subtopics that are covered in the CBSE Physics curriculum, but it…
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Best Books for JEE Advanced Preparation
Last modified on:3 years agoReading Time:9MinutesBest Books for JEE Advanced Preparation If you are dreaming of becoming a successful engineer and aiming for a dazzling career in the field of engineering, then Joint Entrance Examination (JEE) is your gateway to some of the best institutions in India. With top courses in engineering, cracking JEE is a…
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Best books for NEET 2023 Preparation
Last modified on:3 years agoReading Time:20MinutesBest books for NEET 2023 Preparation For NEET aspirants, finding the right resources can be crucial for success. In this article, we have compiled a list of the best books for NEET 2023 as recommended by NEET toppers. The road to success in any competitive exam requires a well-structured plan and…
