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 Indirect Methods for Long Distances for Class 11 Physics
Last modified on:5 months agoReading Time:10Minutes Numerical Problems on Indirect Methods for Long Distances Class 11 Physics · Units and Measurements SQ Echo and Measurement Practice Set Apply the echo formula $d = \frac{v \times t}{2}$ and parallax concepts Ch 2 · Units and Measurements 1 In a submarine fitted with a SONAR, the time interval…
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Numerical Problems Based on Electric Flux for Class 12 Physics
Last modified on:5 months agoReading Time:14MinutesElectric flux The term flux implies some kind of flow. Flux is the property of any vector field. The electric flux is a property of electric field. The electric flux through a given area held inside an electric field is the measure of the total number of electric lines of force…
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Numerical Problems Based on Applications of Gauss’s Law for Class 12 Physics
Last modified on:5 months agoReading Time:10Minutes Numerical Problems on Gauss’s Law Applications Class 12 Physics · Electric Charges and Fields SQ Electric Field of Continuous Charge Distributions Apply Gauss’s Law formulas for line charges and infinite plates Ch 1 · Electrostatics 1 An infinite line charge produces a field of $9 \times 10^4\text{ NC}^{-1}$ at a…
