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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CBSE 2014 Physics Question Paper for Class 12
Last modified on:8 years agoReading Time:1MinuteQuestion Paper Solution
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NEET Phy SHM (Study Notes)
Last modified on:5 years agoReading Time:3Minutes(1) A motion, which repeats itself over and over again after a regular interval of time is called a periodic motion Revolution of earth around the sun (period one year), Rotation of earth about its polar axis (period one day), Motion of hour’s hand of a clock (period 12-hour) etc are…
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CBSE 2015 Physics for Class 12
Last modified on:8 years agoReading Time:1MinuteQuestion paper Solution
