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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Download Topicwise DPP for CBSE Class 7 Science
Last modified on:3 years agoReading Time:3MinutesHere we are providing Topicwise DPP for CBSE Class 7 Science. Each chapter is subdivided into subtopics. Topicwise all possible varieties questions are covered in this package. Most of the important questions from NCERT Textbook and NCERT Exemplar are included. Solution to each and every questions are provided. This product Topicwise…
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MCQ Questions for Class 8 Science Chapter 2 Microorganisms – Friend and Foe
Last modified on:3 years agoReading Time:11MinutesMCQ Questions for Class 8 Science Chapter 2 Microorganisms – Friend and Foe Here we are providing mcq questions for class 8 science. In this article, we are covering Class 8 Science Chapter 2 Microorganisms – Friend and Foe. Q1. Microorganisms are classified into major groups.a) 2b) 3c) 4d) 5 ➤…
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Assertion Reason Questions for Class 8 Science Chapter 18 Pollution of Air and Water
Last modified on:3 years agoReading Time:10MinutesAssertion Reason Questions for Class 8 Science Chapter 18 Pollution of Air and Water Here we are providing assertion reason questions for class 8 science. In this article, we are covering Class 8 Science Chapter 18 Pollution of Air and Water. Directions: The question below consists of an assertion and a…
