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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Assertion and Reason Questions on class 12 Physics Chapter 10 Wave Optics
Last modified on:3 years agoReading Time:9MinutesDirections: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses.(a) If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.(b) If both Assertion and Reason…
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Assertion and Reason questions on class 12 Physics Chapter 9 Ray Optics and Optical Instruments
Last modified on:3 years agoReading Time:9MinutesDirections: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses.(a) If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.(b) If both Assertion and Reason…
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Electric Charge
Last modified on:5 years agoReading Time:14MinutesWhat is an electric charge? The three most common elementary particles are electrons, protons and neutrons. With the advancement in technology, we have discovered hundreds of elementary particles. Many of them are rare and of no concern to us in the present course. Because of their mass these particles attract each…
