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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Class 11th Physics Waves (Video Lectures)
Last modified on:5 years agoReading Time:1MinuteLecture-1 Lecture-2
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Lenz’s law
Last modified on:6 years agoReading Time:4MinutesWhat is Lenz’s Law? This law gives us the direction of induced emf. According to this law, the direction of induced emf in a circuit is such that it opposes the change in magnetic flux responsible for its production. Lenz’s law is in accordance with the principle of conservation of energy.…
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Magnetic Flux
Last modified on:6 years agoReading Time:3MinutesWhat is Magnetic Flux? Flux is basically count of number of lines crossing a surface. The number of magnetic field lines crossing a surface is known as magnetic flux linked with that surface. Consider a closed curve enclosing an area A (as shown in the figure). Let there be a uniform…
