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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NCERT Solutions for Class 9 Science Chapter 5 The Fundamental Unit of Life
Last modified on:5 years agoReading Time:17MinutesHere we have given NCERT Solutions for Class 9 Science Chapter 5 The Fundamental Unit of Life . Board CBSE Textbook NCERT Class Class 9 Subject Science Chapter Chapter 5 Chapter Name The Fundamental Unit of Life Number of Questions Solved 18 Category NCERT Solutions NCERT Solutions for Class 9 Science…
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NCERT Solutions for Class 9 Science Chapter 4 Structure of the Atom
Last modified on:5 years agoReading Time:29MinutesHere we have given NCERT Solutions for Class 9 Science Chapter 4 Structure of the Atom. Board CBSE Textbook NCERT Class Class 9 Subject Science Chapter Chapter 4 Chapter Name Structure of the Atom Number of Questions Solved 34 Category NCERT Solutions NCERT Solutions for Class 9 Science Chapter 4 Structure…
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NCERT Solutions for Class 9 Science Chapter 3 Atoms and Molecules
Last modified on:5 years agoReading Time:12MinutesHere we have given NCERT Solutions for Class 9 Science Chapter 3 Atoms and Molecules. Board CBSE Textbook NCERT Class Class 9 Subject Science Chapter Chapter 3 Chapter Name Atoms and Molecules Number of Questions Solved 25 Category NCERT Solutions NCERT Solutions for Class 9 Science Chapter 3 Atoms and Molecules…
