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.
-
COULOMB’S LAW
Last modified on:3 years agoReading Time:18MinutesCOULOMB’S LAW: Two point electric charges q1 and q2 at rest, separated by a distance r exert a force on each other whose magnitude is given by If between the two charges there is free space then Where ε0 is the absolute electric permittivity of the free space and ε0 =…
-
If we comb our hair on a dry day and bring the comb near small pieces of paper, the comb attracts the pieces, why?
Last modified on:4 years agoReading Time:2Minutes If we comb our hair on a dry day and bring the comb near small pieces of paper, the comb attracts the pieces, why? Answer: This is an example of frictional electricity and induction. When we comb our hair, it gets positively charged by rubbing. When the comb is brought…
-
Can two similarly charged bodies attract each other?
Last modified on:4 years agoReading Time:1Minute Yes, when the charge on one body Q is much greater than that on the other q and they are close enough to each other so that force of attraction between Q and induced charge on the other exceeds the force of repulsion between Q and q. However, two similar…
-
CBSE Class 12 Chemistry Revision Notes Chapter-10 Haloalkanes and Haloarenes
Last modified on:5 years agoReading Time:15MinutesHALOALKANESAlkyl halides : General formula is RX, where R = alkyl group. Classification : General methods of preparation :≫ From alcohols : Alkyl halides can be prepared from alcohols in a number of ways : – Action of hydrogen halides : • Order of reactivity of halogen acids towards the above…
-
Lakhmir Singh Physics Class 10 Solutions Chapter 5 – Refraction of Light
Last modified on:5 years agoReading Time:48MinutesThe text book of Lakhmir Singh And Manjit Kaur for Class 10 Physics gives the students a detailed picture about each and every chapter. This is the best book for your class 10 science preparation. We are providing you the detailed solutions for chapter 5 Refraction of Light for free. Don’t forget to check out…
-
NCERT Solutions For Class 12 Chemistry Chapter 2 Solutions
Prepare better for your exams with our standard Class 12 Chemistry NCERT solution.
