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:5 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:5 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:5 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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Important Questions Class 12 Chemistry Chapter 6 General Principles and Processes of Isolation of Elements 1 Mark Questions
Last modified on:5 years agoReading Time:6Minutes1. What is pig iron? Ans. The iron which is obtained from blast furnace and contains about 4% carbon and many other impurities in smaller amounts like S, P, Si, Mn etc, is called pig iron. 2. What is cast iron? Ans. Iron obtained by melting pig iron with scrap iron and coke…
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Important Questions CBSE Class 10 Science Life Processes 1 Mark Questions
Last modified on:5 years agoReading Time:10Minutes1. Amoeba shows following kind of nutrition(a) autotrophic(b) holozoic(c) saprotrophic(d) parasitic Answer (b)Holozoic 2. The process by which blood is cleared of metabolic wastes in case of kidney failure is called(a) artificial kidney(b) dialysis(c) transplantation(d) filtration Answer (b)Dialysis 3. Woody plants carry gaseous exchange through(a) root hair(b) stem hair(c) Lenticels(d) epidermal…
