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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IIT Foundation Mathematics Problems on Sequence and Series Based on Geometric Progression (G.P.)
Last modified on:3 years agoReading Time:6MinutesIIT Foundation Mathematics Problems are helpful for students aspiring for NTSE, Olympiad, KVPY, IIT JEE and other engineering and competitive exams. These questions are prepared by best faculties from all over India. Here we are providing problems on Sequence and Series based on topic Geometric Progression (G.P.). Q.1. If 1, x,…
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IIT Foundation Mathematics Problems on Sequence and Series Based on Arithmetic Progression
Last modified on:5 years agoReading Time:6MinutesIIT Foundation Mathematics Problems are helpful for students aspiring for NTSE, Olympiad, KVPY, IIT JEE and other engineering and competitive exams. These questions are prepared by best faculties from all over India. Here we are providing problems on Sequence and Series based on topic Arithmetic Progression. Q.1. Find the 26th term…
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Extra Questions For Class 10 Maths Chapter 5 Arithmetic Progression
Last modified on:3 years agoReading Time:30Minutesnth Term of an ARITHMETIC PROGRESSION ( AP )nth term an of the AP with first term a and common difference d is given by an = a + (n – 1) d. nth Term from the end of an ARITHMETIC PROGRESSION ( AP)Let the last term of an AP be…
