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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NCERT Solutions for Class 9 Science Chapter 15 Improvement in Food Resources
Last modified on:5 years agoReading Time:23MinutesHere we have given NCERT Solutions for Class 9 Science Chapter 15 Improvement in Food Resources. Board CBSE Textbook NCERT Class Class 9 Subject Science Chapter Chapter 15 Chapter Name Improvement in Food Resources Number of Questions Solved 26 Category NCERT Solutions NCERT Solutions for Class 9 Science Chapter 15 Improvement…
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NCERT Solutions for Class 9 Science Chapter 13 Why do we fall ill
Last modified on:5 years agoReading Time:14MinutesHere we have given NCERT Solutions for Class 9 Science Chapter 13 Why Do We Fall III. Board CBSE Textbook NCERT Class Class 9 Subject Science Chapter Chapter 13 Chapter Name Why Do We Fall III Number of Questions Solved 16 Category NCERT Solutions NCERT Solutions for Class 9 Science Chapter…
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NCERT Solutions for Class 9 Science Chapter 12 Sound
Last modified on:5 years agoReading Time:32MinutesHere we have given NCERT Solutions for Class 9 Science Chapter 12 Sound. Board CBSE Textbook NCERT Class Class 9 Subject Science Chapter Chapter 12 Chapter Name Sound Number of Questions Solved 39 Category NCERT Solutions NCERT Solutions for Class 9 Science Chapter 12 Sound INTEXT Questions Question 1.How does the…
