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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Capacitance
Last modified on:5 years agoReading Time:1MinuteImportant Concepts & Formula
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Electrostatics (For CBSE Class 12)
Last modified on:5 years agoReading Time:5MinutesQUESTIONS Q1. What is the work done in moving a test charge ‘q’ through a distance of 1 cm along the equatorial axis of an electric dipole? [1] Hint : on equatorial line V=0 Q2. Why in Millikan’s Oil Drop experiment, the charge measured was always found to be of some…
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An Introduction To Electrostatics
Last modified on:5 years agoReading Time:8MinutesThe electromagnetic force between charged particles is one of the fundamental forces of nature. We begin this chapter by describing some of the basic properties of electric forces. We then discuss Coulomb’s law, which is the fundamental law governing the force between any two charged particles. Next, we introduce the concept…
