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.
-
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…
-
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…
-
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…
-
MCQ Questions for Class 10 Science Chapter 2 Acids, Bases And Salts
Last modified on:3 years agoReading Time:31MinutesMCQ Questions for Class 10 Science Chapter 2 Acids, Bases and Salts CBSE Class 10 SCIENCE Question Type MCQ No. of Questions 85 Useful for Class 10 Studying Students Class 10 Science Chapter 2 Acids, Bases and Salts MCQs with Answers Q.1. Which one of the following is acidic?(a) Lemon juice (b) Tomatoes (c)…
-
MCQ Questions for Class 10 Science Chapter 1 Chemical Reactions And Equations
Last modified on:3 years agoReading Time:14MinutesQ.1. Magnesium ribbon is rubbed before burning because it has a coating of(a) basic magnesium carbonate(b) basic magnesium oxide(c) basic magnesium sulphide(d) basic magnesium chloride Answer Answer: a Q.2. The chemical formula of lead sulphate is (a) Pb2SO4(b) Pb(SO4)2(c) PbSO4(d) Pb2(SO4)3 Answer Answer: c Q.3. When green coloured ferrous sulphate crystals are heated, the colour of the…
