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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Reynolds Number
Last modified on:3 years agoReading Time:10MinutesWhat is Reynolds Number? The Reynolds number (Re) is a dimensionless parameter used in fluid mechanics to characterize the flow of a fluid (liquid or gas) around an object or through a conduit. It relates the inertial forces to the viscous forces in the fluid and helps determine the type of…
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Assertion and Reason Questions for Class 9 Science Chapter 6 Tissues
Last modified on:1 year agoReading Time:13MinutesHere we are providing assertion reason questions for class 9 science. This article covers assertion reason questions based on Class 9 Science Chapter 6 Tissues. To check the answer, click on ‘Answer’ given below each question. After clicking it will expand. Assertion and Reason Questions for Class 9 Science Chapter 6…
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Assertion and Reason Questions for Class 9 Science Chapter 5 The Fundamental Unit of Life
Last modified on:1 month agoReading Time:18Minutes Here we are providing assertion reason questions for class 9 science. This article covers assertion reason questions based on Class 9 Science Chapter 5 The Fundamental Unit of Life. To check the answer, click on ‘Answer’ given below each question. After clicking it will expand. Assertion Reason Questions for Class…
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Assertion and Reason Questions for Class 9 Science Chapter 9 Force and Laws of Motion
Last modified on:1 year agoReading Time:19MinutesHere we are providing assertion reason questions for class 9 science. This article covers assertion reason questions based on Class 9 Science Chapter 9 Force and Laws of Motion. To check the answer, click on ‘answer’ given below each question. After clicking it will expand. Assertion and Reason Questions for Class…
