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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CISF Full Form
Last modified on:3 years agoReading Time:15MinutesUnderstanding CISF Full Form and Its Significance In the realm of security and protection, the acronym “CISF” holds substantial importance. CISF stands for the Central Industrial Security Force, a paramilitary organization of significant significance in safeguarding critical assets and ensuring public safety. Knowing the full form of CISF is vital, as…
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Download Best Reference Books for CBSE Class 10 Science
Last modified on:3 years agoReading Time:16Minutes[PDF] Download Best Reference Books for CBSE Class 10 Science When it comes to excelling in CBSE Class 10 Science, the role of reference books cannot be overstated. These supplementary materials serve as valuable companions to your regular textbooks, offering deeper insights, diverse explanations, and additional practice opportunities. In this article,…
