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 12 Chemistry Chapter 3 Electrochemistry
Last modified on:4 years agoReading Time:18MinutesNCERT Solutions For Class 12 Chemistry Chapter 3 Electrochemistry Here we are providing NCERT solutions for Class 12 Chemistry Chapter 3 Electrochemistry. NCERT TEXTBOOK QUESTIONS SOLVED 3.1. How would you determine the standard electrode potential of the system Mg2+1 Mg?Ans: A cell will be set up consisting of Mg/MgSO4 (1 M) as one electrode…
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NCERT Solutions For Class 12 Chemistry Chapter 1 The Solid State
Last modified on:5 years agoReading Time:50MinutesNCERT TEXTBOOK QUESTIONS SOLVED 1.1.Why are solids rigid?Ans: The constituent particles in solids have fixed positions and can oscillate about their mean positions. Hence, they are rigid. 1.2.Why do solids have a definite volume?Ans: The constituent particles of a solid have fixed positions and are not free to move about, i.e., they possess…
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NCERT Solution For Class 12 Physics Chapter 12 Atoms
Last modified on:5 years agoReading Time:37MinutesQuestion 12.1: Choose the correct alternative from the clues given at the end of the each statement: (a) The size of the atom in Thomson’s model is ………. the atomic size in Rutherford’s model. (much greater than/no different from/much less than.) (b) In the ground state of ………. electrons are in stable equilibrium,…
