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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Download PPT for Class 10 Science
Last modified on:3 weeks agoReading Time:6MinutesDownload PPT for Class 10 Science Here we are providing PPT for Class 10 Science. These PPTs are based on CBSE Class 10 Syllabus. Special Features: Class 10 Science PPT for Online Teaching PPT Class 10 Science PPT Based On Class 10 Science Syllabus Who Should Download? Teachers Editable Yes, you…
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Case Study Questions for Class 12 Business Studies Chapter 2 Principles of Management
Last modified on:3 years agoReading Time:10MinutesCase Study Questions for Class 12 Business Studies Chapter 2 Principles of Management Case Study Question 1: Here you will find Case Study Questions for CBSE Class 12 Business Studies Chapter 2 Principles of Management. Laxmi opens a jewellery showroom in Delhi after completing a course in jewellery designing. She has…
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Case Study Questions for Class 12 Business Studies Chapter 1 Nature and Significance of Management
Last modified on:3 years agoReading Time:15MinutesCase Study Questions for Class 12 Business Studies Chapter 1 Nature and Significance of Management Here you will find Case Study Questions for CBSE Class 12 Business Studies (BST) Chapter 1 Nature and Significance of Management. Case Study Question 1: Read the following text and answer question no. 14-16 on the…
