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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Physics VSQs for Class 11 with Answers Chapter 3 Motion in a Straight Line
Last modified on:5 years agoReading Time:9MinutesQ.1. Are rest and motion absolute or relative terms? Answer Answer: Yes, both rest and motion are relative terms. An object at rest in one frame of reference can be in motion in another frame of reference. Q.2. Can an object be at rest as well as in motion at the…
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Conservation of Energy and Momentum MCQs for NEET
Last modified on:5 years agoReading Time:8MinutesQ1. If the kinetic energy of a body increases by 0.1%, the percentage increase in its momentum will be (a) 0.05% (b) 0.1% (c) 1.0% (d) 10% Answer: (a) Q.2. Work done in raising a box depends on(a) How fast it is raised(b) The strength of the man(c) The height by…
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Conservation of Linear Momentum and Impulse MCQs for NEET
Last modified on:5 years agoReading Time:10MinutesQ.1. An explosion breaks a rock into three parts in a horizontal plane. Two of them go off at right angles to each other. The first part of mass 1 kg moves with a speed of 12 m/s and the second part of mass 2 kg moves with 8 m/s speed.…
