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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MCQ Questions for Class 9 Science Chapter 7 Diversity in Living Organisms
Last modified on:3 years agoReading Time:8MinutesMCQ Questions for Class 9 Science Chapter 7 Diversity in Living Organisms Q.1. Which of the following is the largest phylum?(A) Arthropoda (B) Annelida (C) Mollusca (D) Coelenterate. Check Answer Answer: (A) Q.2. Basic taxonomic category is(A) Population (B) Species (C) Variety (D) Breed Check Answer Answer: (B) Q.3. Amoeba has…
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Numerical Problems Based on Total Internal Reflection and Critical Angle for Class 12 Physics
Last modified on:4 years agoReading Time:5MinutesNumerical Problems Based on Total Internal Reflection and Critical Angle for Class 12 Physics Here we are providing numerical problems based on topic total internal reflection and critical angle for class 12 physics. Q.1. Calculate the critical angle for glass-air surface, if a ray of light which is incident in air…
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Numerical Problems Based on Refraction of Light for Class 12 Physics
Last modified on:4 years agoReading Time:8MinutesNumerical Problems Based on Refraction of Light for Class 12 Physics Here we are providing numerical problems based on refraction of light for class 12 physics. This covers problems on lateral shift, real and apparent depth. Students can practice these questions for better understanding of the concepts and formulae. Q.1. A…
