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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Heredity & Evolution
Last modified on:5 years agoReading Time:29Minutes Facts that Matter Heredity is the transmission of characters or traits from the parents to their offspring. Variation is the difference in the characters or traits among the individuals of a species. Accumulation of Variations Sexual reproduction of organisms produces variations. The variations produced in organisms during successive generations…
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Important Questions for CBSE 12 Board Examination (Physics)
Last modified on:5 years agoReading Time:3MinutesQ.1) What is the direction of the force acting on a charge particle q, moving with a velocity v in a uniform magnetic field B ? Answer: Q.2) Name the part of the electromagnetic spectrum of wavelength 10- 2 m and mention its one application. Answer: Q.3) An electron and alpha…
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Important Questions for CBSE Board Exams (Chemistry)
Last modified on:5 years agoReading Time:16Minutes This section will be updated regularly. Stay tuned!!! Q.1) Which point defect in crystals does not alter the density of the relevant solid? Answer: Frenkel defect. Q.2) Define the term ‘Tyndall effect’. Answer: The scattering of light by colloidal particles is known as Tyndall effect. Q.3) Why is the froth…
