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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NCERT Class 12 Solutions
Last modified on:5 years agoReading Time:6MinutesAll the schools have NCERT books into their curriculum and no other book is recommended. The first preference for any exam is NCERT books be it your board exams, medical entrance exams or the most prestigious UPSC exams. We have tried to provide the most suitable and relevant solution to the…
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NCERT Class 11 Solution
Last modified on:5 years agoReading Time:6MinutesHere you can freely download NCERT Solutions for Class 11 , We have listed all the chapters PDF’s. All the Solutions available here are latest. There is no Login, nor Sign Up, neither Redirects, just click the downloading link, you can view your PDF and download accordingly. Latest NCERT Solutions Class 11…
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CBSE 11 Phy Test Paper Work, Energy & Power
Last modified on:5 years agoReading Time:6MinutesTEST CLASS XI WORK, ENERGY & POWER Very Short Answer Type Questions: [ 1 Marks Questions ] Q1. What is the work done when a body is moved horizontally along a frictionless surface? Q2. What is the work done on a body moving in a circular path? Q3. Define 1 watt. Q4.…
