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 Questions for Class 12 Maths Chapter 1 Relations and Functions
Last modified on:3 years agoReading Time:4MinutesCase Study Questions for Class 12 Maths Chapter 1 Relations and Functions Question 1: Sherlin and Danju are playing Ludo at home during Covid-19. While rolling the dice, Sherlin’s sister Raji observed and noted the possible outcomes of the throw every time belongs to set {1, 2, 3, 4, 5, 6}.…
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Case Study Question for Class 12 Physics Chapter 7 Alternating Current
Last modified on:5 months agoReading Time:4MinutesCase Study Question for Class 12 Physics Chapter 7 Alternating Current Question 1: Read the para given below and answer the questions that follow: Resonant Series LCR Circuit. When the frequency of ac supply is such that the inductive reactance and capacitive reactance become equal, the impedance of the series LCR…
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Case Study Question for Class 12 Physics Chapter 6 Electromagnetic Induction
Last modified on:3 years agoReading Time:4MinutesCase Study Question for Class 12 Physics Chapter 6 Electromagnetic Induction Question 1: Read the para given below and answer the questions that follow: Self Induction. When a current I flows through a coil, flux linked with it is φ = LI, where L is a constant known as self inductance…
