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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Chapter at a glance (Gravitation)
Last modified on:5 years agoReading Time:5Minutes Force of gravitation : The force of attraction which exists between all objects, big or small, not only on the surface of the earth, but anywhere and everywhere in the universe, irrespective of the distances separating them, is called force of gravitation. Newton’s law of gravitation : Every body in…
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PRACTICE TEST FOR JEE MAIN-2019 (PHYSICS) Detailed Solution
Last modified on:8 years agoReading Time:1MinuteDETAILED SOLUTION
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PRACTICE TEST FOR JEE MAIN-2019 (PHYSICS)
Last modified on:8 years agoReading Time:2MinutesPHYSICS SECTION – A …
