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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Study Notes for CBSE Class 9 Science Chapter 2 Is Matter Around Us Pure
Last modified on:5 years agoReading Time:11MinutesStudy Notes for CBSE Class 9 Science Chapter 2 Is Matter Around Us Pure ‘Pure’ word means that there is no mixing in a substance. But according to scientific language all things are mixture of so many substances, not of single one. That’s why they are not pure. e.g., Milk, water,…
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Class 9 Science Chapter 1 Matter In Our Surrounding Study Notes
Last modified on:5 years agoReading Time:4MinutesMatterThe matter is the material of which everything in this universe, in and around us is made up of in different shapes. It is anything that occupies space and has mass and offers resistance to any applied force.Physical Nature of Particles :Matter is made up of particles. The particles of matter…
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Class 10 Science Chapter 7 Control & Co-ordination Study Notes
Last modified on:5 years agoReading Time:1MinuteBIOLOGY: FOR CBSE CLASS 10 (Science Book 1) Kindle Edition by MANJU KAUSHIK (Author) Format: Kindle Edition
