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.
-
Reynolds Number
Last modified on:3 years agoReading Time:10MinutesWhat is Reynolds Number? The Reynolds number (Re) is a dimensionless parameter used in fluid mechanics to characterize the flow of a fluid (liquid or gas) around an object or through a conduit. It relates the inertial forces to the viscous forces in the fluid and helps determine the type of…
-
Case Study Questions for Class 12 Physics Chapter 2 Electrostatic Potential and Capacitance
Last modified on:3 years agoReading Time:5MinutesCase Study Questions for Class 12 Physics Chapter 2 Electrostatic Potential and Capacitance Case Study Question 1: When an insulator is placed in an external field, the dipoles become aligned. Induced surface charges on the insulator establish a polarization field Ēi in its interior. The net field Ē in the insulator…
-
Case Study and Passage Based Questions for Class 10 Science Chapter 11 The Human Eye and The Colourful World
Last modified on:5 years agoReading Time:9MinutesIn CBSE Class 10 Science Paper, Students will have to answer some questions based on Assertion and Reason. There will be a few questions based on case studies and passage based as well. In that, a paragraph will be given, and then the MCQ questions based on it will be asked. Here,…
-
Case Study and Passage Based Questions for Class 10 Science Chapter 4 Carbon and Its Compounds
Last modified on:4 years agoReading Time:8MinutesIn CBSE Class 10 Science Paper, Students will have to answer some questions based on Assertion and Reason. There will be a few questions based on case studies and passage based as well. In that, a paragraph will be given, and then the MCQ questions based on it will be asked. Here,…
