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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Case Study Questions for Class 12 Biology Chapter 10 Microbes in Human Welfare
Last modified on:4 years agoReading Time:3MinutesCase Study Questions for Class 12 Biology Chapter 10 Microbes in Human Welfare Question 1: Villagers in a place near Chambur started planning to make power supply for agricultural purposes from cow dung. They have started a biogas plant for the purpose. Study the flow chart for biogas production given below…
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Case Study Questions for Class 12 Biology Chapter 8 Human Health and Diseases
Last modified on:4 years agoReading Time:6MinutesCase Study Questions for Class 12 Biology Chapter 8 Human Health and Diseases Question 1: In a study to test a new vaccine against a viral disease, mouse model testing is done. In this process, mice are vaccinated and their blood samples were tested. Mice developed mild disease symptom. After few…
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Assertion Reason Questions for Class 11 Chemistry Chapter 13 Hydrocarbons
Last modified on:5 months agoReading Time:8MinutesAssertion Reason Questions for Class 11 Chemistry Chapter 13 Hydrocarbons Directions: (a) Assertion and reason both are correct statements and reason is correct explanation for assertion.(b) Assertion and reason both are correct statements but reason is not correct explanation for assertion.(c) Assertion is correct statement but reason is wrong statement.(d) Assertion…
