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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Some basic concepts of chemistry (JEE/NEET)
Last modified on:5 years agoReading Time:1Minute
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Would the NEET 2019 be difficult?
Last modified on:5 years agoReading Time:3MinutesLevel will be at par with 2018 only ! If you have prepared well, then paper will be very easy for sure 🙂 Some tips for your preparation : (1) Practice from limited and standard books like SL Arora, HC VERMA, etc. Don’t do too many books. Do limited books, and do…
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Quotes That Will Motivate You to Study
Last modified on:5 years agoReading Time:11MinutesDo you sometimes struggle with a lack of motivation? You’re supposed to be studying for next week’s test. But instead you end up texting your friends, watching YouTube videos, or playing games. Sound familiar? Developing long-term motivation is a complicated issue. But you can stay motivated in the short term by reading inspirational quotes.…
