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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Conductors and Insulators
Last modified on:4 years agoReading Time:2MinutesConductors and Insulators Solids are mainly classified into two groups, conductors and insulators. In conductors, electric charges are free to move from one place to another, whereas in insulators they are tightly bound to their respective atoms. In an uncharged body, there are equal number of positive and negative charges. The…
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Electric Field Due to a Point Charge
Last modified on:3 years agoReading Time:1MinuteElectric Field Due to a Point Charge The electric field produced by a point charge q can be obtained in general terms from Coulomb’s law.First note that the magnitude of the force exerted by the charge q on a test charge q0 is then divide this value by q0 to obtain…
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Electric Field Due to a Charged Ring
Last modified on:3 years agoReading Time:4MinutesElectric Field Due to a Charged Ring A conducting ring of radius R has a total charge q uniformly distributed over its circumference. We are interested in finding the electric field at point P that lies on the axis of the ring at a distance x from its centre. We divide…
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Numerical Problems Based on Derivation of Dimensional Formulae for Class 11 Physics
Last modified on:5 months agoReading Time:10Minutes The dimensional formula of a physical quantity can be obtained by defining its relation, with other quantities, whose dimensions in M, L and T are known. Numerical Problems on Dimensional Analysis Class 11 Physics · Units and Measurements SQ Dimensional Formulae Practice Set Derive dimensions and apply the principle of…
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Numerical Problems Based on Measurement of Time for Class 11 Physics
Last modified on:5 months agoReading Time:6Minutes Numerical Problems on Time Measurement Class 11 Physics · Units and Measurements SQ Time Scales and Accuracy Practice Set Apply dimensional analysis and unit conversions Ch 2 · Units and Measurements 1 Find the number of times the human heart beats in the life of 60 years of a man,…
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Numerical Problems Based on Indirect Methods for Small Distances for Class 11 Physics
Last modified on:5 months agoReading Time:6Minutes Numerical Problems on Indirect Methods for Small Distances Class 11 Physics · Units and Measurements SQ Atomic Volume and Film Thickness Apply volume formulas to estimate molecular dimensions Ch 2 · Units and Measurements 1 The radius of a muonic hydrogen atom is $2.5 \times 10^{-13}\text{ m}$. What is the…
