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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Revision Notes for Class 9 Maths Chapter 4 Linear Equations in Two Variables
Last modified on:3 years agoReading Time:5Minutes[PDF] Download Revision Notes for Class 9 Maths Chapter 4 Linear Equations in Two Variables Download revision notes for CBSE Class 9 Maths. In this article, we are covering revision notes for CBSE Class 9 Maths Chapter 4 Linear Equations in Two Variables. Students are suggested to go through each and…
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Revision Notes for Class 9 Maths Chapter 2 Polynomials
Last modified on:3 years agoReading Time:6Minutes[PDF] Download Revision Notes for Class 9 Maths Chapter 2 Polynomials Download revision notes for CBSE Class 9 Maths. In this article, we are covering revision notes for CBSE Class 9 Maths Chapter 2 Polynomials. Students are suggested to go through each and every line of this pdf for better understanding.…
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Revision Notes for Class 9 Maths Chapter 1 Number System
Last modified on:3 years agoReading Time:6Minutes[PDF] Download Revision Notes for Class 9 Maths Chapter 1 Number System Download revision notes for CBSE Class 9 Maths. In this article, we are covering revision notes for CBSE Class 9 Maths Chapter 1 Number System. Students are suggested to go through each and every line of this pdf for…
