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…
-
Important Questions for CBSE Class 12 Chemistry Chapter 13 – Amines 1 Mark Questions
Last modified on:5 years agoReading Time:5Minutes For an amine RNH2, write an expression to indicate its basic strength. Ans. 2. Give one use of quaternary ammonium salts. Ans. Quaternary ammonium salts are widely used for manufacture of synthetic detergents. 3. Give one example of Hoffmann – Bromamide reaction Ans. In Hoffmann – Bromamide reaction an acid amide is…
-
Lakhmir Singh Class 10 Physics Solutions Chapter 3 – Sources of Energy
Last modified on:5 years agoReading Time:60MinutesThe 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 3 Sources of Energy for free. Don’t forget to check out…
-
Physics MCQs for Class 12 with Answers Chapter 2 Electrostatic Potential and Capacitance
Last modified on:5 years agoReading Time:28Minutes1. A positively charged particle is released from rest in an uniform electric field. The electric potential energy of the charge [NCERT Exemplar](a) remains a constant because the electric field is uniform.(b) increases because the charge moves along the electric field.(c) decreases because the charge moves along the electric field.(d) decreases…
