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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Quick Revision Notes for Class 10 Science Chapter 6 Life Processes
Last modified on:3 years agoReading Time:31MinutesQuick Revision Notes for Class 10 Science Chapter 6 Life Processes Quick revision notes are a summarized form of study material that condenses the most important information from a larger body of text. They are designed to help students review and retain key concepts, facts, and ideas in a short amount…
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Class 10 Physics Light Important Questions
Last modified on:5 years agoReading Time:15MinutesVery Short Answer Questions [1 marks] 1. Define lens.Ans. A piece of optical material bounded by one or two spherical surfaces is called lens. 2. Why is a convex lens called converging lens? Ans. It is because a parallel beam of light on passing through it converges at a point. 3. Define…
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Class 10 Physics Light (NCERT Solution)
Last modified on:5 years agoReading Time:8MinutesNCERT QUESTIONS WITH THEIR ANSWERS IN-TEXT QUESTIONS Page 168 1. Define the principal focus of a concave mirror. Ans. A point in front of a concave mirror, on its principal axis, such that parallel rays travelling parallel to the principal axis, after reflection actually converge at this point. 2. The radius…
