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…
-
Case Study Questions for Class 12 Chemistry Chapter 2 Solutions
Last modified on:2 years agoReading Time:5Minutes Board CBSE Useful for Class 12 Students Subject Chemistry Chapter Chapter 2 Solutions Type of Questions Case Study Answers Provided Yes Format Question-Answer Format Important Link Class 12 Chemistry Case Study Questions Case Study Questions for Class 12 Chemistry Chapter 2 Solutions There is Case Study Questions in class 12…
-
Case Study Question for Class 12 Physics Chapter 3 Current Electricity
Last modified on:5 months agoReading Time:5Minutes Case Study Question for Class 12 Physics Chapter 3 Current Electricity Case Study Question 1: Whenever an electric current is passed through a conductor, it becomes hot after some time. The phenomenon of the production of heat in a resistor by the flow of an electric current through it is…
-
Case Study Question for Class 12 Physics Chapter 1 Electric Charges and Fields
Last modified on:3 years agoReading Time:19MinutesCase Study Question for Class 12 Physics Chapter 1 Electric Charges and Fields There is Case Study Questions in class 12 Physics in session 2020-21. The first two questions in the board exam question paper will be based on Case Study and Assertion & Reason. Case Study Questions will have 5…
