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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Extra Questions For Class 12 Chapter 1 Electric Charges and Fields
Last modified on:4 years agoReading Time:31MinutesExtra Questions For Class 12 Physics Chapter 1 Electric Charges and Fields We are providing chapter-wise extra questions for class 12 physics. Students can practice these questions to score better marks in their exam. Very Short Answer Questions: Q.1. Give two points of distinction between charge and mass.Ans. Charge can be…
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Extra Questions For Class 10 Science Chapter 10 Reflection and Refraction of Light
Last modified on:5 years agoReading Time:17MinutesExtra Questions On Reflection and Refraction of Light Reflection is the bouncing back of light when it strikes on a polished surface like mirror. Laws of Reflection: (1) Angle of incidence is equal to the angle of reflection.(2) The incident ray, the reflected ray and the normal at the point of…
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Study Notes for Class 9 Science Chapter 8 Motion
Last modified on:5 years agoReading Time:18MinutesStudy Notes for Class 9 Science Chapter 8 Motion Topics to be covered: What is motion? Describing motion of a particle Position, path length and displacement Speed and Velocity Rate of change of velocity Distance-time graph Velocity-time graph Equations of Motion Uniform Circular Motion What is motion? State of Rest: An…
