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…
-
Assertion and Reason Questions for Class 9 Maths Chapter 12 Heron’s Formula
Last modified on:3 years agoReading Time:3MinutesAssertion and Reason Questions for Class 9 Maths Chapter 12 Heron’s Formula Here we are providing assertion reason questions for Class 9 Maths Chapter 12 Heron’s Formula. Directions: In the following questions as Assertion (A) is given followed by a Reason (R). Mark your responses from the following options.(A) Both Assertion…
-
Case Study Questions for Class 9 Maths Chapter 6 Lines and Angles
Last modified on:3 years agoReading Time:2MinutesCase Study Questions for Class 9 Maths Chapter 6 Lines and Angles Here we are providing case study questions for Class 9 Maths Chapter 6 Lines and Angles. Students are suggested to solve the questions by themselves first and then check the answers. This will help students to check their grasp…
-
Case Study Questions for Class 9 Maths Chapter 7 Triangles
Last modified on:3 years agoReading Time:6MinutesCase Study Questions for Class 9 Maths Chapter 7 Triangles Here we are providing case study questions for Class 9 Maths Chapter 7 Triangles. Students are suggested to solve the questions by themselves first and then check the answers. This will help students to check their grasp on this particular chapter…
