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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Conductors and Insulators
Last modified on:4 years agoReading Time:2MinutesConductors and Insulators Solids are mainly classified into two groups, conductors and insulators. In conductors, electric charges are free to move from one place to another, whereas in insulators they are tightly bound to their respective atoms. In an uncharged body, there are equal number of positive and negative charges. The…
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Electric Field Due to a Point Charge
Last modified on:3 years agoReading Time:1MinuteElectric Field Due to a Point Charge The electric field produced by a point charge q can be obtained in general terms from Coulomb’s law.First note that the magnitude of the force exerted by the charge q on a test charge q0 is then divide this value by q0 to obtain…
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Electric Field Due to a Charged Ring
Last modified on:3 years agoReading Time:4MinutesElectric Field Due to a Charged Ring A conducting ring of radius R has a total charge q uniformly distributed over its circumference. We are interested in finding the electric field at point P that lies on the axis of the ring at a distance x from its centre. We divide…
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Case Study and Passage Based Questions for Class 9 Science Chapter 5 The Fundamental Unit of Life
Last modified on:2 years agoReading Time:5MinutesCase Study/Passage Based Questions: Question 1: Study the given diagram of bacterial cell and answer any four questions from (i) to (v). (i) Label the parts marked 1, 2, and 3.(a) 1- Nucleus, 2-Cell wall, 3- Plasma membrane.(b) 1-Cell wall, 2- Nucleoid, 3- Plasma membrane.(c) 1- Cytoplasm ,2- Nucleus, 3- Cell…
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Term 2 Sample Papers for Class 12 Physics
Last modified on:4 years agoReading Time:3MinutesTerm 2 Sample Papers for Class 12 Physics Here we are providing term 2 sample papers for class 12 physics. This paper is prepared according to the latest sample paper prescribed by CBSE for term 2 exams. Practicing sample papers before exams students get to know their shortcomings and while working…
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MCQ Questions for Class 12 Biology Chapter 15 Biodiversity and Conservation
Last modified on:4 years agoReading Time:10MinutesMCQ Questions for Class 12 Biology Chapter 15 Biodiversity and Conservation Here we are providing mcq questions for class 12 biology chapter 15 biodiversity and conservation. These questions on biodiversity and conservation is prepared by subject expert. Students can practice these questions to score better marks in their exams. Q.1. The…
