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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COULOMB’S LAW
Last modified on:3 years agoReading Time:18MinutesCOULOMB’S LAW: Two point electric charges q1 and q2 at rest, separated by a distance r exert a force on each other whose magnitude is given by If between the two charges there is free space then Where ε0 is the absolute electric permittivity of the free space and ε0 =…
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If we comb our hair on a dry day and bring the comb near small pieces of paper, the comb attracts the pieces, why?
Last modified on:4 years agoReading Time:2Minutes If we comb our hair on a dry day and bring the comb near small pieces of paper, the comb attracts the pieces, why? Answer: This is an example of frictional electricity and induction. When we comb our hair, it gets positively charged by rubbing. When the comb is brought…
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Can two similarly charged bodies attract each other?
Last modified on:4 years agoReading Time:1Minute Yes, when the charge on one body Q is much greater than that on the other q and they are close enough to each other so that force of attraction between Q and induced charge on the other exceeds the force of repulsion between Q and q. However, two similar…
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Best Reference Books for Class 11 Physics
Last modified on:3 years agoReading Time:15MinutesBest Reference Books for Class 11 Physics There are several reference books available in the market that can help CBSE class 11 Physics students gain a better understanding of the subject. Some of the best reference books for CBSE class 11 Physics are: It is important to note that while these…
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CBSE Class 12 Biology Practical Syllabus 2023-24
Last modified on:3 years agoReading Time:6Minutes[PDF] Download CBSE Class 12 Biology Practical Syllabus 2023-24 The Biology curriculum for the students of class 12th under the Central Board of Secondary Education can be further divided into two, theory and practicals. On one hand, the theory paper is of 70 marks and on the other hand, the Biology…
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NOOTAN ISC Physics Class 12 Solutions
Last modified on:3 years agoReading Time:5Minutes[PDF] Download NOOTAN ISC Physics Class 12 Solutions Here we are providing NOOTAN ISC Physics Class 12 Solutions. Electrostatics Current Electricity Magnetic Effects of Current and Magnetism Electromagnetic Induction and Alternating Currents Electromagnetic Waves Optics Dual Nature of Radiation and Matter Atoms and Nuclei Electronic Devices Communication Systems About NOOTAN ISC…
