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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Class 12 Physics Important Questions on Electromagnetic Waves
Last modified on:5 years agoReading Time:6MinutesClass 12 Physics Electromagnetic Waves Work Sheet – I ONE MARKS QUESTIONS 1. Write the expression for the displacement current? 2. The charging current for capacitor is 0.5 A. What is the displacement current across its plate? 3. Write an expression for the speed of e.m. waves in free space. 4.…
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UNIT –III- MAGNETIC EFFECTS OF CURRENTS & MAGNETISM
Last modified on:7 years agoReading Time:1MinuteCLASS 12 UNIT-III MAGNETIC EFFECTS OF CURRENTS & MAGNETISM Formula Assignment Level-1 Assignment Level-2 Assignment Level-3
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