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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Case Study Questions for Class 7 Science Chapter 16 Water – A Precious Resource
Last modified on:3 years agoReading Time:7Minutes[Download] Case Study Questions for Class 7 Science Chapter 16 Water – A Precious Resource Here we are providing case study or passage-based questions for class 7 science chapter 16 Water – A Precious Resource. Case Study/Passage Based Questions Passage-1 Rain water and water from other sources like rivers and ponds…
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Case Study Questions for Class 7 Science Chapter 15 Light
Last modified on:4 weeks agoReading Time:10Minutes Looking for high-quality practice material on lenses? You’re in the right place. Below, we are providing important Case Study Questions for CBSE Class 7 Science Chapter 15 Light. These passage-based questions are perfectly aligned with the latest syllabus to help you practice competency-based learning. Read through the provided passage on…
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Case Study Questions for Class 7 Science Chapter 14 Electric Current and Its Effects
Last modified on:3 years agoReading Time:6Minutes[Download] Case Study Questions for Class 7 Science Chapter 14 Electric Current and Its Effects Here we are providing case study or passage-based questions for class 7 science chapter 14 Electric Current and Its Effects. Case Study/Passage Based Questions Passage-1 We use various appliances based on heating effect of current in…
