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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Revision Notes for Class 12 Physics Chapter 12 Atoms
Last modified on:3 years agoReading Time:25MinutesRevision Notes for Class 12 Physics Chapter 12 Atoms Thomson’s model of atom: It was proposed by J. J. Thomson in 1898. According to this model, the positive charge of the atom is uniformly distributed throughout the volume of the atom and the negatively charged electrons are embedded in it like…
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MCQ Questions for Class 10 Maths Chapter 15 Probability
Last modified on:3 years agoReading Time:6MinutesHere we are providing MCQ Questions for Class 10 Maths Chapter 15 Probability. Students are suggested to go through each and every question to practice the chapter well. MCQ Questions for Class 10 Maths Chapter 15 Probability Q.1 A number is selected at random from the integers 1 to 100. What…
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Important Derivations for Class 12 Physics Chapter 10 Wave Optics
Last modified on:3 years agoReading Time:11MinutesImportant Derivations for Class 12 Physics Chapter 10 Wave Optics Derivations related to Huygens’ Principle (1) Using Huygens’ principle, verify the laws of reflection at a plane surface. First the wavefront touches the reflecting surface at B and then at the successive points towards C. In accordance with Huygens’ principle, from…
