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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CBSE 10 Science Ch-07 Control and Coordination (NCERT Solution)
Last modified on:5 years agoReading Time:26MinutesNCERT SOLUTION Chapter-07 Control and Coordination Question 1: What is the difference between a reflex action and walking? Answer: A reflex action is a rapid, automatic response to a stimulus. It does not involve any thinking. For example, we close our eyes immediately when the bright light is focused. Walking, on the other…
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CBSE 10 Science Ch-12 ELECTRICITY
Last modified on:5 years agoReading Time:2MinutesChapter-12 Electricity • Charge is a fundamental particle in an atom. It may be positive or negative. • Like charges repel each other. • Unlike charges attract each other. Coulomb (C) : S. I. unit of charge 1 Coulomb charge = Charge present on approx. 6 × 10^18 electrons • Charge…
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How do Organisms Reproduce
Last modified on:5 years agoReading Time:22MinutesHow do Organisms Reproduce Reproduction is the process by which living organisms produce new individuals similar to themselves. It ensures continuity of life on earth. Nucleus of the cell contains DNA (Deoxyribose Nucleic Acid) which is the heredity material. DNA replicates and forms new cells causing variation. So, these new cells…
