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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Class 9 Science PPT for Online Teaching
Last modified on:2 years agoReading Time:16MinutesClass 9 Science PPT for Online Teaching Are you in search of engaging and comprehensive PowerPoint presentations (PPTs) for teaching CBSE Class 9 Science online? Look no further! Our meticulously crafted PPTs are designed to make your online teaching sessions dynamic and effective. Explore our collection to enhance your teaching experience…
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Numerical Problems Based on Class 11 Physics Units and Measurement
Last modified on:3 years agoReading Time:5MinutesNumerical Problems Based on Class 11 Physics Units and Measurement Q.1. Convert a power of one mega watt on a system whose fundamental units are 10 kg, 1 dm and 1 minute. Solution: 2.16 x 1012 in new units Q.2. The moon is observed from two diametrically opposite points A and…
