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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Differential Equation Formulas for Class 12 Maths
Last modified on:4 years agoReading Time:1Minute Differential Equation Formulae list provided here forms a strong base during your preparation. Learn all the Maths Concepts well and apply formulae to solve your problems. You can answer any question and solve any problem based on Differential Equation easily by referring the below formulas. Differential Equation Formulas
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Area Under The Curve Formulas for Class 12 Maths
Last modified on:4 years agoReading Time:1Minute Area Under The Curve Formulae list provided here forms a strong base during your preparation. Learn all the Maths Concepts well and apply formulae to solve your problems. You can answer any question and solve any problem based on Area Under The Curve easily by referring the below formulas. Area…
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Binomial Theorem Formulas for Class 11 Maths
Last modified on:4 years agoReading Time:1Minute Binomial Theorem Formulae list provided here forms a strong base during your preparation. Learn all the Maths Concepts well and apply formulae to solve your problems. You can answer any question and solve any problem based on Binomial Theorem easily by referring the below formulas. Binomial Theorem Formulas for Class…
