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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Physics
Last modified on:7 years agoReading Time:20MinutesPHYSICS In order to help students preparing for various Engineering and Medical Entrance Examination we are providing free STUDY MATERIALS on this blog. Do share with all your friends & relatives who are preparing for JEE & NEET. Enjoy your preparation. GOOD LUCK Physics Gurukul (Gurgaon) is a premier institute for…
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JEE Main-2019
Last modified on:8 years agoReading Time:7MinutesJoint Entrance Examination (JEE) MAIN will be conducted by the NTA from 2019 onwards. This Examination was being conducted by the Central Board of Secondary Education (CBSE) till 2018. JEE Main 2019 – The National Testing Agency (NTA) will be conducting the Joint Entrance Examination Main (JEE Main) 2019 twice in a…
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JEE (Mains & Advanced)
Last modified on:6 years agoReading Time:8MinutesIn order to crack IIT JEE (Mains & Advanced), candidates require a strong preparation. The syllabus is vast and if they want to master all the topics candidates should start preparing at least when they are in 11th standard or at least two years in advance. Remember it is not only…
