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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Management of Natural Resources (NOTES)
Last modified on:5 years agoReading Time:12MinutesFacts that Matter 1. Ganga Action Plan started in 1985 to remove the pollution in Ganga. 2. The 3 R’s. to save environment are (a) Reduce (b) Recycle (c) Reuse 3. Sustainable development encourages forms of growth that meet current basic human needs…
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Class-11 Physics (Sample Papers For Practice)
Last modified on:5 years agoReading Time:13Minutes 1. A light body and heavy body have equal momentum, which one have greater kinetic energy? 2. What does speedometer of a car indicates? 3. Write down the dimensions of viscosity coefficient 4. Why do we use ball-bearings? 5. How errors are combined in following mathematical operations of physical quantities?…
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Electrostatics (Study Notes)
Last modified on:5 years agoReading Time:9MinutesELECTRIC CHARGES AND FIELDS Electrostatics: Electrostatics is the study of electrical charges at rest (static electricity). Electric Charge: Have you ever noticed what happens when a comb is ruffled through hair? It now becomes capable of attracting small pieces of paper. Similarly, a glass rod rubbed with silk cloth…
