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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MCQ Based on Relative Motion
Last modified on:4 years agoReading Time:3MinutesHere we are providing MCQ questions based on relative motion. These questions are useful for CBSE as well as for competitive exams like JEE and NEET. Students can practice these questions to understand the topic well. Solutions are also provided so that students can check their answers by themselves. [PDF] MCQ…
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MCQ Based on Distance and Displacement
Last modified on:4 years agoReading Time:2MinutesHere we are providing MCQ questions based on distance and displacement. These questions are useful for CBSE as well as for competitive exams like JEE and NEET. Students can practice these questions to understand the topic well. Solutions are also provided so that students can check their answers by themselves. [PDF]…
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Revision Notes for Class 11 Physics Chapter 4 Motion in a Plane
Last modified on:4 years agoReading Time:1MinuteHere we are providing Revision Notes for Class 11 Physics Chapter 4 Motion in a Plane. These revision notes covers all important points and formulas of the chapter. Tips and Tricks are also included. These notes will help students to cover all important points and formulas of Motion in a Plane in a…
