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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Numerical Problems Based on Class 11 Physics Linear Momentum and Force
Last modified on:3 years agoReading Time:5MinutesMomentum Momentum of a body is the quantity of motion possessed by the body. It is equal to the product of mass and velocity of the body. Momentum = Mass × velocity = mv Momentum is a vector quantity because the velocity is a vector and mass m is a scalar.…
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Download Objective Question Bank for Class 11 Maths
Last modified on:3 years agoReading Time:5MinutesAre you looking for Objective Question Bank for Class 11 Maths? If yes, then you have come to the best place. Here we are providing Objective Question Bank for Class 11 Maths. This Objective Question Bank contains different type of objective questions like MCQs, Case Study, Passage Based & Assertion Reason…
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Download Objective Question Bank for Class 11 Chemistry
Last modified on:3 years agoReading Time:5MinutesAre you looking for Objective Question Bank for Class 11 Chemistry? If yes, then you have come to the best place. Here we are providing Objective Question Bank for Class 11 Chemistry. This Objective Question Bank contains different type of objective questions like MCQs, Case Study, Passage Based & Assertion Reason…
