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 Based on Electrical Power and Energy for Class 10 Science
Last modified on:3 years agoReading Time:10MinutesMCQ Questions Based on Electrical Power and Energy for Class 10 Here we are providing MCQ questions for class 10 science based on electrical power and energy. These questions are prepared by expert. These MCQs will help you to understand the topic well. Q.1. The resistance of a conductor is reduced…
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Case Study Questions for Class 9 Science Chapter 15 Improvement In Food Resources
Last modified on:4 years agoReading Time:2MinutesCase Study/Passage Based Questions: Question 1: Read the following and answer any four questions from (i) to (iii) given below : Apiculture is done for producing honey, wax and medicine. The varieties used for apiculture includes A. dorsata, A. florae etc because they sting less and live longer in given beehive.…
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Case Study Questions for Class 9 Science Chapter 14 Natural Resources
Last modified on:4 years agoReading Time:4MinutesCase Study/Passage Based Questions: Question 1: At present the primary nutrient which limits the agricultural yield is nitrogen (N). Some plants are capable to produce more N2 than they consume. These plants show symbiotic relationship with N2-fixing bacteria such as Rhizobium.These bacteria produce root nodules in leguminous plants and convert atmospheric…
