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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Case Study and Passage Based Questions for Class 9 Science Chapter 8 Motion
Last modified on:2 years agoReading Time:3MinutesCase Study/Passage Based Questions: Question 1: Read the following paragraph and any four questions from (i) to (v). Distance is the length of the actual path covered by an object, irrespective of its direction of motion. Displacement is the shortest distance between the initial and final positions of an object in…
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Case Study and Passage Based Questions for Class 9 Science Chapter 7 Diversity in Living Organisms
Last modified on:2 years agoReading Time:4MinutesCase Study/Passage Based Questions: Question 1: Read the following and answer any four questions below from (a) to (d): A plant specimen showed differentiated plant body lacking vascular tissue. Water is necessary to carry on their reproductive activities. (a) The group to which it belongs is ____.(b) Write any two characteristics…
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Daily Practice Problems for CBSE Class 10 Maths
Last modified on:4 years agoReading Time:3MinutesWe are providing you with chapter-wise Daily Practice Problems for your board exam. CBSE Class 10 Board is the first and one of the most important exam for sharing your future. So, it is very necessary to solve different types of maths problems based on class 10 maths syllabus. Our DPPs…
