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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Extra Questions for Class 9 Science Chapter 4 Structure of Atom
Last modified on:4 years agoReading Time:12MinutesExtra Questions for Class 9 Science Chapter 4 Structure of Atom Here we are providing extra questions for class 9 science chapter 4 structure of atom. These questions are important for exam as well. You will be able to score more in your exams by practicing these questions. Very Short Answer…
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Assertion and Reason Questions for Class 11 Chemistry Chapter 11 The p-Block Elements
Last modified on:5 months agoReading Time:6MinutesAssertion and Reason Questions for Class 11 Chemistry Chapter 11 The p-Block Elements Directions:(a) Assertion and reason both are correct statements and reason is correct explanation for assertion.(b) Assertion and reason both are correct statements but reason is not correct explanation for assertion.(c) Assertion is correct statement but reason is wrong…
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Assertion and Reason Questions for Class 11 Chemistry Chapter 6 Thermodynamics
Last modified on:5 months agoReading Time:5MinutesAssertion and Reason Questions for Class 11 Chemistry Chapter 6 Thermodynamics Directions: (a) Assertion and reason both are correct statements and reason is correct explanation for assertion.(b) Assertion and reason both are correct statements but reason is not correct explanation for assertion.(c) Assertion is correct statement but reason is wrong statement.(d)…
