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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Frictional Electricity
Last modified on:3 years agoReading Time:10Minutes What is frictional electricity? Frictional electricity, also known as static electricity, is the type of electricity that results from the friction or rubbing of two objects together. When two objects are rubbed against each other, the friction between them can cause the transfer of electrons from one object to the…
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Alternating Current
Last modified on:3 years agoReading Time:24Minutes What is Alternating Current (A.C.)? Alternating Current (AC) is an electrical current that periodically reverses direction in a circuit. Unlike Direct Current (DC), which flows only in one direction, AC constantly changes its polarity and magnitude over time. Explanation: In an AC circuit, electrons periodically switch direction, moving back and…
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Terminal Velocity
Last modified on:3 years agoReading Time:13Minutes What is Terminal Velocity? Terminal velocity is the constant maximum speed reached by an object in free fall or falling through a fluid (such as air or water) when the force of air resistance or fluid resistance becomes equal in magnitude and opposite in direction to the force of gravity…
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Revision Notes For Class 12 Physics Chapter 6 Electromagnetic Induction
Last modified on:5 years agoReading Time:20MinutesMagnetic flux : The number of magnetic lines of force crossing a surface is known as magnetic flux linked with that surface. It is given by, Φ= B. A = BA cosθ, where B is the strength of magnetic field, A is the area of surface and θ is the angle…
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Lami’s Theorem MCQ for NEET
Last modified on:5 years agoReading Time:7MinutesQ.1. Which of the following is true about Lami’s theorem?(a) The theorem is derived based on the cosine rule of trigonometry(b) The theorem is only applicable to regular shaped bodies in equilibrium(c) The theorem is helpful in determining the unknown forces acting at a point for an object in equilibrium.(d) The…
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Class 11th Physics Waves (Video Lectures)
Last modified on:5 years agoReading Time:1MinuteLecture-1 Lecture-2
