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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Class 11 Physics Oscillation (For Competitive Exams)
Last modified on:7 years agoReading Time:1MinuteClass 11 Physics Oscillation Section-A
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Class 11 Physics Rotational Motion
Last modified on:5 years agoReading Time:3Minutes Questions A disc of metal is melted and a solid sphere is formed. What will happen to the moment of inertia about a vertical axis passing through the centre? What are the unit and dimensions of moment of inertia ? Is it a vector ? Is radius of gyration…
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ICSE Physics Class 10 Syllabus
Last modified on:7 years agoReading Time:29Minutes ICSE Physics Class 10 Syllabus There is one paper of two hours duration carrying 80 marks and Internal Assessment of practical work carrying 20 marks. The paper is divided into two sections: Section I (40 marks) and Section II (40 marks). Section I (compulsory) contains short answer questions on the entire…
