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:5 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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Case Study Questions for Class 7 Science Chapter 11 Transportation in Animals and Plants
Last modified on:3 years agoReading Time:6Minutes[Download] Case Study Questions for Class 7 Science Chapter 11 Transportation in Animals and Plants Here we are providing case study or passage-based questions for class 7 science chapter 11 Transportation in Animals and Plants. Case Study/Passage Based Questions Passage-1 Plants have pipe-like vessels made up of special cells, forming the…
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Case Study Questions for Class 7 Science Chapter 10 Respiration in Organisms
Last modified on:3 years agoReading Time:7Minutes[Download] Case Study Questions for Class 7 Science Chapter 10 Respiration in Organisms Here we are providing case study or passage-based questions for class 7 science chapter 10 Respiration in Organisms. Case Study/Passage Based Questions Passage-1 Respiration is a basic characteristics of all living beings. It is an energy releasing reaction.…
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Case Study Questions for Class 7 Science Chapter 9 Soil
Last modified on:3 years agoReading Time:6Minutes[Download] Case Study Questions for Class 7 Science Chapter 9 Soil Here we are providing case study or passage-based questions for class 7 science chapter 9 Soil. Case Study/Passage Based Questions Passage-1 The chemical substances which are rich from nutrients and used to maintain soil fertility are called fertilizers. They also…
