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 12 Chemistry Chapter 2 Solutions
Last modified on:2 years agoReading Time:11Minutes Board CBSE Useful for Class 12 Students Subject Chemistry Chapter Chapter 2 Solutions Type of Questions Numerical Problems Answers Provided Yes Format Question-Answer Format Important Link Class 12 Chemistry Numerical Problems Numerical Problems Based on Class 12 Chemistry Chapter 2 Solutions Here we are providing numerical problems based on CBSE…
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Previous Year Questions for Class 12 Maths Chapter 7 Integrals
Last modified on:4 years agoReading Time:1MinutePrevious Years Questions for Class 12 Maths Chapter 7 Integrals Here we are providing Previous Year’s Questions for Class 12 Maths chapter 7 Integrals. Solving previous year’s questions help us to understand the type of questions that may be asked in the exam. Questions are provided in PDF format. So you…
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Case Study Questions for Class 12 Chemistry Chapter 15 Polymers
Last modified on:4 years agoReading Time:4MinutesCase Study Questions for Class 12 Chemistry Chapter 15 Polymers Case Study Question 1: There are two broad types of polymerization reactions, i.e., the addition or chain growth polymerization and condensation or step growth polymerization. In the addition polymerization, the molecules of the same monomer or different monomers add together on…
