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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Physics
Last modified on:7 years agoReading Time:20MinutesPHYSICS In order to help students preparing for various Engineering and Medical Entrance Examination we are providing free STUDY MATERIALS on this blog. Do share with all your friends & relatives who are preparing for JEE & NEET. Enjoy your preparation. GOOD LUCK Physics Gurukul (Gurgaon) is a premier institute for…
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JEE Main-2019
Last modified on:8 years agoReading Time:7MinutesJoint Entrance Examination (JEE) MAIN will be conducted by the NTA from 2019 onwards. This Examination was being conducted by the Central Board of Secondary Education (CBSE) till 2018. JEE Main 2019 – The National Testing Agency (NTA) will be conducting the Joint Entrance Examination Main (JEE Main) 2019 twice in a…
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JEE (Mains & Advanced)
Last modified on:6 years agoReading Time:8MinutesIn order to crack IIT JEE (Mains & Advanced), candidates require a strong preparation. The syllabus is vast and if they want to master all the topics candidates should start preparing at least when they are in 11th standard or at least two years in advance. Remember it is not only…
