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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Rectilinear Motion & Projectile motion
Last modified on:8 years agoReading Time:1MinuteSECTION – I Straight Objective Type This section contains 15 multiple choice questions. Each question has choices (A), (B), (C), and (D) out of which ONLY ONE is correct.
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CBSE Class 9 Physics GRAVITATION
Last modified on:5 years agoReading Time:14Minutes Gravitational Force of Earth If we release a small stone without pushing it from a height, it accelerates towards earth. The stone is when accelerated towards earth, means some force is acting on it. The force which pulls the objects towards the centre of the earth is known as gravitational…
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Study Notes for CBSE Class 9 Science Chapter 9 Force and Laws of Motion
Last modified on:5 years agoReading Time:20MinutesStudy Notes for CBSE Class 9 Science Chapter 9 Force and Laws of Motion Forces and Laws of Motion : Force : It is the force that enables us to do any work. To do anything, either we pull or push the object. Therefore, pull or push is called force. Example,…
