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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Numerical Problems Based on Class 11 Physics Projectile Motion
Last modified on:3 years agoReading Time:6MinutesNumerical Problems Based on Class 11 Physics Projectile Motion Q.1. A cricketer can throw a ball to maximum horizontal distance of 160 m. Calculate the maximum vertical height to which he can throw the ball ? Given g = 10 m/s2. Q.2. A ball is thrown horizontally from the top of…
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Numerical Problems Based on Class 11 Physics Chapter 3 Motion In A Straight Line
Last modified on:3 years agoReading Time:13MinutesNumerical Problems Based on Class 11 Physics Chapter 3 Motion In A Straight Line Q.1. A body starting from rest has an acceleration of 20 m/s2. Calculate the distance travelled by it in 10th second. Ans. 190 m Q.2. A car travelled the first third of a distance x at a…
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Extra Questions for Class 12 Biology Chapter 12 Biotechnology and its Applications
Last modified on:4 years agoReading Time:11MinutesExtra Questions for Class 12 Biology Chapter 12 Biotechnology and its Applications Here we are providing extra questions for class 12 biology. This post covers extra questions for class 12 biology chapter 12 Biotechnology and its Applications. Students can read and practice these questions to score better marks in the exam.…
