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.
-
Case Study Questions for Class 7 Science Chapter 6 Physical and Chemical Changes
Last modified on:3 years agoReading Time:6Minutes[Download] Case Study Questions for Class 7 Science Chapter 6 Physical and Chemical Changes Here we are providing case study or passage-based questions for class 7 science chapter 6 Physical and Chemical Changes. Case Study/Passage Based Questions Passage-1 Methane (CH4) when burnt in oxygen (or air) yields carbon-dioxide (CO2) and water…
-
Case Study Questions for Class 7 Science Chapter 5 Acids, Bases and Salts
Last modified on:3 years agoReading Time:7Minutes[Download] Case Study Questions for Class 7 Science Chapter 5 Acids, Bases and Salts Here we are providing case study or passage-based questions for class 7 science chapter 5 Acids, Bases and Salts. Case Study/Passage Based Questions Passage-1 The reaction between an acid and a base is known as neutralisation reaction.…
-
Case Study Questions for Class 7 Science Chapter 4 Heat
Last modified on:3 years agoReading Time:7Minutes[Download] Case Study Questions for Class 7 Science Chapter 4 Heat Here we are providing case study or passage-based questions for class 7 science chapter 4 Heat. Case Study/Passage Based Questions Passage-1 Light a candle, Keep one hand above the candle flame and one hand on the side of the flame.…
