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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Quick Revision Notes for Class 10 Science Chapter 6 Life Processes
Last modified on:3 years agoReading Time:31MinutesQuick Revision Notes for Class 10 Science Chapter 6 Life Processes Quick revision notes are a summarized form of study material that condenses the most important information from a larger body of text. They are designed to help students review and retain key concepts, facts, and ideas in a short amount…
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Class 10 Physics Light Important Questions
Last modified on:5 years agoReading Time:15MinutesVery Short Answer Questions [1 marks] 1. Define lens.Ans. A piece of optical material bounded by one or two spherical surfaces is called lens. 2. Why is a convex lens called converging lens? Ans. It is because a parallel beam of light on passing through it converges at a point. 3. Define…
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Class 10 Physics Light (NCERT Solution)
Last modified on:5 years agoReading Time:8MinutesNCERT QUESTIONS WITH THEIR ANSWERS IN-TEXT QUESTIONS Page 168 1. Define the principal focus of a concave mirror. Ans. A point in front of a concave mirror, on its principal axis, such that parallel rays travelling parallel to the principal axis, after reflection actually converge at this point. 2. The radius…
