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:5 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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Assertion Reason Questions for Class 7 Science Chapter 18 Waste Water Story
Last modified on:3 years agoReading Time:15Minutes[Download] Assertion Reason Questions for Class 7 Science Chapter 18 Waste Water Story Here we are providing assertion reason questions for Chapter 18 Waste Water Story. Directions: The question below consists of an assertion and a Reason. Use the following key to choose the appropriate answer.(a) Both A and R are…
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Assertion Reason Questions for Class 7 Science Chapter 17 Forests – Our Lifeline
Last modified on:3 years agoReading Time:13Minutes[Download] Assertion Reason Questions for Class 7 Science Chapter 17 Forests – Our Lifeline Here we are providing assertion reason questions for Chapter 17 Forests – Our Lifeline Directions: The question below consists of an assertion and a Reason. Use the following key to choose the appropriate answer.(a) Both A and…
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[PDF] Download Numerical Problems for Class 11 Physics Laws of Motion with Answers
Last modified on:3 years agoReading Time:4MinutesHere we are providing Numerical Problems for Class 11 Physics Laws of Motion. Problems based on all topics of Laws of Motion are covered in this package. Problems are classified into topics. So, after completing a particular topic students can solve the problems based on that particular topic to understand the…
