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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Charging of Insulators
Last modified on:4 years agoReading Time:2Minutes 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…
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Charging by Contact
Last modified on:4 years agoReading Time:2Minutes Charging by Contact When a negatively charged ebonite rod is rubbed on a metal object, such as a sphere, some of the excess electrons from the rod are transferred to the sphere. Once the electrons are on the metal sphere, where they can move readily, they repel one another and…
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Charging by Rubbing
Last modified on:4 years agoReading Time:3Minutes Charging by Rubbing The simplest way to charge certain bodies is to rub them against each other. When a glass rod is rubbed with a silk cloth, the glass rod acquires some positive charge and the silk cloth acquires negative charge by the same amount. The explanation of appearance of…
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Problems Based on Work and Energy for Class 9 Science
Last modified on:3 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:3 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…
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MCQ Questions Based on Newton’s First Law of Motion
Last modified on:3 years agoReading Time:7MinutesHere we are providing MCQ Questions Based on Newton’s First Law of Motion. Answers are also provided so that student can check their answer after completing these questions. MCQ Questions Based on Newton’s First Law of Motion Q.1. What is the first law of motion?A. A body at rest stays at…
