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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Electric Field of a Line Charge
Last modified on:3 years agoReading Time:3MinutesElectric Field of a Line Charge Positive charge q is distributed uniformly along a line with length 2a, lying along the y-axis between y=–a and y=+a. We are here interested in finding the electric field at point P on the x-axis. Derivation of electric field due to a line charge: Thus,…
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Electric Field Lines
Last modified on:3 years agoReading Time:5MinutesElectric Field Lines Electric charges create an electric field in the space surrounding them. It is useful to have a kind of “map” that gives the direction and indicates the strength of the field at various places. Field lines, a concept introduced by Michael Faraday, provide us with an easy way…
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Human Ear
Last modified on:4 years agoReading Time:3MinutesHuman Ear The human ear, like that of other mammals, contains sense organs that serve two quite different functions: that of hearing and that of head and eye movements. Anatomically, the ear has three distinguishable parts: the outer, middle, and inner ear. How Human Ear Works? Different sounds produced in our surroundings are collected by…
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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…
