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.
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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…
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Differentiation in calculus: Explained with examples
Last modified on:4 years agoReading Time:13MinutesIn mathematics, we use to study the term “Derivative”. It is a very important topic in both pre-calculus and calculus. The term “derivative” plays a very important role in our daily life. With the help of a derivative, we can check the velocity of a moving object. Differentiation is the process…
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MCQ Questions for Class 9 Science Chapter 10 Gravitation
Last modified on:4 years agoReading Time:7MinutesMCQ Questions for Class 9 Science Chapter 10 Gravitation Here we are providing MCQ Questions for Class 9 Science Chapter 10 Gravitation. These questions are prepared by subject expert and is very useful for exams. Students can practice these questions for better understanding, and this will help them in scoring well…
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MCQ Questions for Class 9 Science Chapter 9 Force and Laws of Motion
Last modified on:4 years agoReading Time:7MinutesMCQ Questions for Class 9 Science Chapter 9 Force and Laws of Motion Here we are providing MCQ Questions for Class 9 Science Chapter 9 Force and Laws of Motion. These questions are prepared by subject expert and is very useful for exams. Students can practice these questions for better understanding,…
