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 3 Fibre to Fabric
Last modified on:3 years agoReading Time:7Minutes[Download] Case Study Questions for Class 7 Science Chapter 3 Fibre to Fabric Here we are providing case study or passage-based questions for class 7 science chapter 3 Fibre to Fabric. Case Study/Passage Based Questions Passage-1 Divyank and Amar are working on a project report on ‘Occupational Hazards’. They went to…
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Case Study Questions for Class 7 Science Chapter 2 Nutrition in Animals
Last modified on:3 years agoReading Time:8Minutes[Download] Case Study Questions for Class 7 Science Chapter 2 Nutrition in Animals Here we are providing case study or passage-based questions for class 7 science chapter 2 Nutrition in Animals. Case Study/Passage Based Questions Passage-1 Amoeba is a microscopic single-celled organism found in pond water. It has a cell membrane,…
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Case Study Questions for Class 7 Science Chapter 1 Nutrition in Plants
Last modified on:3 years agoReading Time:7Minutes[Download] Case Study Questions for Class 7 Science Chapter 1 Nutrition in Plants Here we are providing case study or passage-based questions for class 7 science chapter 1 Nutrition in Plants. Case Study/Passage Based Questions Passage-1 The bodies of living organisms are made of tiny units called cells. Cells can be…
