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 9 Science Chapter 12 Sound
Last modified on:2 years agoReading Time:7Minutes Board CBSE Useful for Class 9 Students Subject Science Chapter Chapter 12 Sound Question Type Case Study Questions No. of Questions 1 With Answers Yes Important Link Class 9 Chapterwise Case Study Case Study Questions for Class 9 Science Chapter 12 Sound Here we are providing case study questions for…
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MCQ Questions for Class 10 Science Chapter 14 Sources of Energy
Last modified on:3 years agoReading Time:7MinutesMCQ Questions for Class 10 Science Chapter 14 Sources of Energy Q.1. Which of the following is the renewable source of energy?(A) natural gas (B) petroleum (C) coal (D) wind Show Answer Answer: (D) Q.2. The energy liberated by charcoal on burning is(A) 30 kJ (B) 33 kJ (C) 35 kJ…
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MCQ Questions for Class 10 Science Chapter 13 Magnetic Effects of Electric Current
Last modified on:3 years agoReading Time:26MinutesMCQ Questions for Class 10 Science Chapter 13 Magnetic Effects of Electric Current Here we are providing MCQ questions for class 10 science chapter 13 Magnetic effects of Electric Current. These questions useful for your exam, are prepared by subject expert. Practicing these questions will help you to perform better in…
