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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Conceptual Questions Based on Class 12 Physics Ray Optics
Last modified on:3 years agoReading Time:14MinutesConceptual Questions Based on Class 12 Physics Ray Optics Here we are providing conceptual questions based on class 12 physics chapter 9 Ray Optics. These questions are prepared by experts and are very useful from exam point of view. Students can practice these questions for scoring better marks in the exam.…
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Revision Notes for Class 12 Physics Chapter 7 Alternating Current
Last modified on:3 years agoReading Time:13MinutesHere we are providing revision notes for class 12 physics chapter 7 alternating current. Students can use this article for quick revision of the chapter. Revision Notes for Class 12 Physics Chapter 7 Alternating Current 1. Alternating current. It is that current which varies in magnitude continuously and reverses its direction…
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Case Study Questions for Class 11 Chemistry Chapter 11 The p-Block Elements
Last modified on:3 years agoReading Time:4Minutes Case Study Questions for Class 11 Chemistry Chapter 11 The p-Block Elements Case Study Questions Question 1: p-block elements are the ones in which the last electron enters in a p-orbital of valence shell. The first members of each group of p-block differs from rest of the members of its…
