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 11th Physics Ch-8 Gravitation Questions with Solutions
Last modified on:5 years agoReading Time:8MinutesQuestion 1: The mass of two bodies are doubled and the distance is halved, how will the gravitational force change? Answer Question 2: If two masses are equal and made of same material, how will the force of attraction vary with separation? Answer Question 3: What is the height at which…
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MCQ Questions for Class 10 Science Human Eye and Colourful World with Answers
Last modified on:3 years agoReading Time:8MinutesMCQ Questions for Class 10 Science Human Eye and Colourful World with Answers Question 1. The least distance of distinct vision for a normal eye is(a) infinity(b) 25 cm(c) 2.5 cm(d) 25 m Answer Answer: b Question 2. The defect of vision in which a person cannot see the distant objects…
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MCQ Questions for Class 10 Science Light Reflection and Refraction with Answers
Last modified on:3 years agoReading Time:11MinutesMCQ Questions for Class 10 Science Light Reflection and Refraction with Answers Here we are providing MCQ Questions for CBSE Class 10 Science Light- Reflection and Refraction with Answers. Students are suggested to go through each and every question to check their grasp on this particular chapter. Question 1. If an…
