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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IMPORTANT NOTES (Electricity)
Last modified on:5 years agoReading Time:10Minutes1. There are two kinds of electric charges i.e., positive and negative. The opposite charges attract each other and the similar charges repel each other. Coulomb (C) is the standard unit of charge. 2. Conductors: The substances through which electricity can flow are called conductors. Silver, copper, gold and aluminium are…
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Assignment-2 (Electricity)
Last modified on:5 years agoReading Time:12MinutesVery Short Answer Type Questions: 1. Define electric work. 2. What is the unit of electric work? Define it, in relation to quantity of charge and potential difference. 3. Name two bigger units of electric work. 4. What do you understand by the term current electricity? 5. Define the term “electric…
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Capacitors (for JEE/NEET)
Last modified on:5 years agoReading Time:1Minute
