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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Conductors and Insulators
Last modified on:4 years agoReading Time:2MinutesConductors and Insulators Solids are mainly classified into two groups, conductors and insulators. In conductors, electric charges are free to move from one place to another, whereas in insulators they are tightly bound to their respective atoms. In an uncharged body, there are equal number of positive and negative charges. The…
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Electric Field Due to a Point Charge
Last modified on:3 years agoReading Time:1MinuteElectric Field Due to a Point Charge The electric field produced by a point charge q can be obtained in general terms from Coulomb’s law.First note that the magnitude of the force exerted by the charge q on a test charge q0 is then divide this value by q0 to obtain…
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Electric Field Due to a Charged Ring
Last modified on:3 years agoReading Time:4MinutesElectric Field Due to a Charged Ring A conducting ring of radius R has a total charge q uniformly distributed over its circumference. We are interested in finding the electric field at point P that lies on the axis of the ring at a distance x from its centre. We divide…
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Assertion Reason Questions for Class 7 Science Chapter 10 Respiration in Organisms
Last modified on:3 years agoReading Time:12Minutes[Download] Assertion Reason Questions for Class 7 Science Chapter 10 Respiration in Organisms Here we are providing assertion reason questions for Chapter 10 Respiration in Organisms Directions: The question below consists of an assertion and a Reason. Use the following key to choose the appropriate answer.(a) Both A and R are…
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Assertion Reason Questions for Class 7 Science Chapter 9 Soil
Last modified on:3 years agoReading Time:13Minutes[Download] Assertion Reason Questions for Class 7 Science Chapter 9 Soil Here we are providing assertion reason questions for Chapter 9 Soil. Directions: The question below consists of an assertion and a Reason. Use the following key to choose the appropriate answer.(a) Both A and R are true and R is…
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Assertion Reason Questions for Class 7 Science Chapter 8 Winds Storms and Cyclones
Last modified on:3 years agoReading Time:12Minutes[Download] Assertion Reason Questions for Class 7 Science Chapter 8 Winds Storms and Cyclones Here we are providing assertion reason questions for Chapter 8 Winds Storms and Cyclones. Directions: The question below consists of an assertion and a Reason. Use the following key to choose the appropriate answer.(a) Both A and…
