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 Solutions for Class 11 Physics
Last modified on:3 years agoReading Time:14Minutes[PDF] Download NCERT Solutions for Class 11 Physics Chapters Covered in Class 11 Physics Chapter 1: Physical WorldChapter 2: Units and MeasurementsChapter 3: Motion in a Straight LineChapter 4: Motion in a PlaneChapter 5: Laws of MotionChapter 6: Work, Energy, and PowerChapter 7: System of Particles and Rotational MotionChapter 8: GravitationChapter…
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Evergreen Science Solutions for Class 9 Chapter 15 Improvement In Food Resources
Last modified on:3 years agoReading Time:10Minutes[PDF] Download Evergreen Science Solutions for Class 9 Chapter 15 Improvement In Food Resources Class 9 Science Evergreen Solutions are a comprehensive set of solutions that cover all the chapters in the CBSE Science curriculum for class 9. In this article, we are covering evergreen science solutions for Class 9 Chapter…
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Daily Practice Problems for CBSE Class 10 Science
Last modified on:3 years agoReading Time:6MinutesDaily Practice Problems for CBSE Class 10 Science We are providing you with chapter-wise Daily Practice Problems for your CBSE Class 10 Science Board Exam. CBSE Class 10 Board is the first and one of the most important exams for sharing your future. So, it is very necessary to practice different types of…
