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 9 Maths Chapter 15 Probability
Last modified on:4 years agoReading Time:2MinutesHere we are providing Case Study Questions for Class 9 Maths Chapter 15 Probability. Case Study Questions for Class 9 Maths Chapter 15 Probability Case Study Questions Question 1: A jeweller has different types of bracelets in his shop. Sunita wants to purchase a bracelet for her sister’s birthday gift. When…
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Problems Based on Work and Energy for Class 9 Science
Last modified on:4 years agoReading Time:9MinutesIn physics, work done is defined as the product of force applied to an object and its displacement. Work is a scalar quantity and is typically measured in the unit of Joules (J). The formula for calculating work is: W = F x d where W is the work done, F…
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MCQ Questions Based on Momentum Conservation Principle for Class 9 Science
Last modified on:4 years agoReading Time:9MinutesHere we are providing MCQ Questions Based on Momentum Conservation Principle for Class 9 Science. Students can practice these Topicwise MCQ Questions to understand the topic well. Answers are also provided so that student can check their answer after completing these questions. The principle of momentum conservation states that the total…
