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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MCQ Questions Based on Electrical Power and Energy for Class 10 Science
Last modified on:3 years agoReading Time:10MinutesMCQ Questions Based on Electrical Power and Energy for Class 10 Here we are providing MCQ questions for class 10 science based on electrical power and energy. These questions are prepared by expert. These MCQs will help you to understand the topic well. Q.1. The resistance of a conductor is reduced…
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Case Study Questions for Class 9 Science Chapter 15 Improvement In Food Resources
Last modified on:4 years agoReading Time:2MinutesCase Study/Passage Based Questions: Question 1: Read the following and answer any four questions from (i) to (iii) given below : Apiculture is done for producing honey, wax and medicine. The varieties used for apiculture includes A. dorsata, A. florae etc because they sting less and live longer in given beehive.…
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Case Study Questions for Class 9 Science Chapter 14 Natural Resources
Last modified on:4 years agoReading Time:4MinutesCase Study/Passage Based Questions: Question 1: At present the primary nutrient which limits the agricultural yield is nitrogen (N). Some plants are capable to produce more N2 than they consume. These plants show symbiotic relationship with N2-fixing bacteria such as Rhizobium.These bacteria produce root nodules in leguminous plants and convert atmospheric…
