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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Extra Questions for Class 7 Science Chapter 17 Forests – Our Lifeline
Last modified on:2 years agoReading Time:10Minutes Extra Questions for Class 7 Science Chapter 17 Forests – Our Lifeline ‘Extra questions for Class 7 Science’ refer to additional practice questions and exercises that may go beyond the standard curriculum provided in textbooks. These questions are designed to provide students with more opportunities to practice and reinforce their…
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Extra Questions for Class 7 Science Chapter 16 Water – A Precious Resource
Last modified on:2 years agoReading Time:10Minutes Extra Questions for Class 7 Science Chapter 16 Water – A Precious Resource ‘Extra questions for Class 7 Science’ refer to additional practice questions and exercises that may go beyond the standard curriculum provided in textbooks. These questions are designed to provide students with more opportunities to practice and reinforce…
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Extra Questions for Class 7 Science Chapter 15 Light
Last modified on:2 years agoReading Time:10Minutes Extra Questions for Class 7 Science Chapter 15 Light ‘Extra questions for Class 7 Science’ refer to additional practice questions and exercises that may go beyond the standard curriculum provided in textbooks. These questions are designed to provide students with more opportunities to practice and reinforce their understanding of concepts…
