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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Download Topicwise DPP for CBSE Class 7 Science
Last modified on:3 years agoReading Time:3MinutesHere we are providing Topicwise DPP for CBSE Class 7 Science. Each chapter is subdivided into subtopics. Topicwise all possible varieties questions are covered in this package. Most of the important questions from NCERT Textbook and NCERT Exemplar are included. Solution to each and every questions are provided. This product Topicwise…
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MCQ Questions for Class 8 Science Chapter 2 Microorganisms – Friend and Foe
Last modified on:3 years agoReading Time:11MinutesMCQ Questions for Class 8 Science Chapter 2 Microorganisms – Friend and Foe Here we are providing mcq questions for class 8 science. In this article, we are covering Class 8 Science Chapter 2 Microorganisms – Friend and Foe. Q1. Microorganisms are classified into major groups.a) 2b) 3c) 4d) 5 ➤…
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Assertion Reason Questions for Class 8 Science Chapter 18 Pollution of Air and Water
Last modified on:3 years agoReading Time:10MinutesAssertion Reason Questions for Class 8 Science Chapter 18 Pollution of Air and Water Here we are providing assertion reason questions for class 8 science. In this article, we are covering Class 8 Science Chapter 18 Pollution of Air and Water. Directions: The question below consists of an assertion and a…
