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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Ultimate ICSE Class 10 Chemistry Worksheets (Chapter-wise) | Editable & Printable
Last modified on:1 month agoReading Time:9MinutesAre you a teacher struggling to create fresh practice papers for your Class 10 batch every week? Or your student looking for questions that actually match the difficulty level of the ICSE Board Exams? Chemistry in ICSE Class 10 is not about writing long paragraphs; it is about specific observations, balanced…
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Ultimate ICSE Class 10 Physics Worksheets (Chapter-wise) | Editable & Printable
Last modified on:4 weeks agoReading Time:8MinutesAre you a teacher struggling to create fresh practice papers for your Class 10 batch every week? Or your student looking for questions that actually match the difficulty level of the ICSE Board Exams? Physics in ICSE is significantly different from CBSE. It requires a deeper understanding of derivations, technical terms,…
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Beyond Earth Class 6 Science MCQ Questions with Answers | CBSE Curiosity Book Chapter 12
Practice important multiple choice questions for Class 6 Science Chapter 12 based on CBSE Curiosity textbook. Download PDF and check answer keys.
