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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Relation Formulas for Class 11
Last modified on:4 years agoReading Time:8MinutesRelation Formulas for Class 11 Here we are providing Relation Formula For Class 11 Maths. Practice Relation problems based on these formulas. Important terms and definitions are also included so that you can revise them in a very short time. List of Relation Formulas for Class 11 (1) Ordered Pair: An…
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[PDF] Download Latest Study Modules for CBSE Class 10 Maths
Last modified on:4 years agoReading Time:4MinutesThis well-prepared study modules for CBSE Class 10 Maths can help you to understand the topics and problems covered in each chapter in a very efficient way. Studying these professionally made study modules can help students to score excellent marks in their exam. All these chapter modules are available in PDF…
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Class 12 Accountancy PPT for Online Teaching
Last modified on:3 years agoReading Time:2Minutes Here we are providing class 12th Accountancy PPTs. Make your online teaching interesting with our interactive PowerPoint presentations for Accountancy. A must buy for teachers teaching online. Class 12 Accountancy PPT for Online Teaching Get PowerPoint presentations for complete Class 12 Accountancy. These PPTs are very useful for teaching purpose. These…
