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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Conceptual Questions Based on Class 12 Physics Dual Nature of Radiation and Matter
Last modified on:3 years agoReading Time:6MinutesConceptual Questions Based on Class 12 Physics Dual Nature of Radiation and Matter Q.1. What happens to the wavelength of a photon after it collides with an electron? Solution. A photon transfers a part of its energy to the colliding electron, so its energy decreases and consequently wavelength increases. Q.2. Why…
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Conceptual Questions Based on Class 12 Physics Wave Optics
Last modified on:3 years agoReading Time:8MinutesConceptual Questions Based on Class 12 Physics Wave Optics Here we are providing conceptual questions based on Class 12 Physics Wave Optics. Go through each and every question for better understanding. Q.1. What are the reasons to believe that light is a wave motion? Solution. Light undergoes interference, diffraction and polarization.…
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Conceptual Questions Based on Class 12 Physics Optical Instruments
Last modified on:3 years agoReading Time:10MinutesConceptual Questions Based on Class 12 Physics Optical Instruments Here we are providing conceptual questions based on class 12 physics chapter 9 Optical Instruments. These questions are prepared by experts and are very useful from exam point of view. Students can practice these questions for scoring better marks in the exam.…
