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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Assertion Reason Questions for Class 9 Science Term 2 Exam
Last modified on:3 years agoReading Time:4MinutesThere are 6 chapters in CBSE Class 9 Science Term 2 Syllabus. These includes class 9 science chapter 3, 4, 10, 11, 12 and 13. Assertion Reason Questions based on these are provided below. Assertion Reason Questions for Class 9 Science Term 2 Exam Assertion-Reason Questions are the most tedious part…
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Assertion and Reason Questions for Class 9 Maths Chapter 8 Quadrilaterals
Last modified on:4 years agoReading Time:6MinutesAssertion and Reason Questions for Class 9 Maths Chapter Quadrilaterals Directions: (a) Assertion and reason are true and reason is the correct explanation of assertion.(b) Both assertion and reason are true but reason is not the correct explanation of assertion.(c) Assertion is true but reason is false.(d) Assertion is false but…
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Assertion and Reason Questions for Class 11 Physics Chapter 14 Oscillations
Last modified on:3 years agoReading Time:6MinutesAssertion and Reason Questions for Class 11 Physics Chapter 14 Oscillations Directions: (a) If both assertion and reason are true and the reason is the correct explanation of the assertion.(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.(c) If assertion is true…
