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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NCERT Exemplar for Class 7 Science Chapter 16 Water – A Precious Resource
Last modified on:3 years agoReading Time:6MinutesNCERT Exemplar for Class 7 Science Chapter 16 Water – A Precious Resource NCERT Exemplar Books for Class 7 NCERT (National Council of Educational Research and Training) Exemplar Books are supplementary study materials that are designed to provide additional practice and challenge for students in addition to the concepts covered in…
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NCERT Exemplar for Class 7 Science Chapter 9 Soil
Last modified on:3 years agoReading Time:6MinutesNCERT Exemplar for Class 7 Science Chapter 9 Soil NCERT Exemplar Books for Class 7 NCERT (National Council of Educational Research and Training) Exemplar Books are supplementary study materials that are designed to provide additional practice and challenge for students in addition to the concepts covered in the NCERT textbooks. These…
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NCERT Exemplar for Class 7 Science Chapter 13 Motion and Time
Last modified on:3 years agoReading Time:6MinutesNCERT Exemplar for Class 7 Science Chapter 13 Motion and Time NCERT Exemplar Books for Class 7 NCERT (National Council of Educational Research and Training) Exemplar Books are supplementary study materials that are designed to provide additional practice and challenge for students in addition to the concepts covered in the NCERT…
