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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EMI Study Notes for JEE
Last modified on:5 years agoReading Time:1Minute
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Class 10 Science Metals & Non-metals (Solved Assignment-03)
Last modified on:5 years agoReading Time:22MinutesQuestion 41: (a) What type of oxides are formed when non-metals react with oxygen ? Explain with an example. (b) What type of oxides are formed when metals combine with oxygen ? Explain with the help of an example. Solution : (a) When non-metals react with oxygen, they form acidic oxides…
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Class 10 Science Metals & Non-metals (Solved Assignment-02)
Last modified on:5 years agoReading Time:14MinutesQuestion 21: Which metal foil is used for packing some of the medicine tablets ? Solution : Aluminium foil. Question 22: Name the non-metal which is used : (a) to convert vegetable oil into vegetable ghee(solid fat). (b) as a rocket fuel (in liquid form). (c) to make electrodes of dry…
