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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MCQ Questions for Class 12 Chemistry Chapter 15 Polymers
Last modified on:4 years agoReading Time:6MinutesMCQ Questions for Class 12 Chemistry Chapter 15 Polymers Q.1. Orlon is a polymer of:(a) Styrene (b) Tetrafluoroethylene (c) Vinyl chloride (d) Acrylonitrile Answer Answer: (d) Q.2. Chemically rayon is(a) Cellulose nitrate (b) Cellulose sulphate (c) Cellulose acetate (d) Cellulose phosphate Answer Answer: (c) Q.3. Which of the following is not…
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Numerical Value and Integer Answer Type Questions For JEE Main
Last modified on:4 years agoReading Time:3Minutes650+ Numerical Value and Integer Type Questions Based on Complete Physics Syllabus For JEE Main Numerical Value (Integer) type questions are the new addition to JEE Main paper pattern. There will be a total of 30 numerical value type questions in JEE Main. You have to attempt only 15 questions out of…
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Assertion Reason Questions for Class 10 Maths Chapter 1 Real Numbers
Last modified on:2 years agoReading Time:10Minutes Board CBSE Useful for Class 10 Students Subject Maths Chapter Chapter 1 Real Numbers Type of Questions Assertion and Reason Format Question-Answer Format Important Link Class 10 Maths Chapterwise Assertion Reason Assertion Reason Questions for Class 10 Maths Chapter 1 Real Numbers Here we are providing Assertion Reason Questions for…
