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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Numerical Problems Based on Derivation of Dimensional Formulae for Class 11 Physics
Last modified on:5 months agoReading Time:10Minutes The dimensional formula of a physical quantity can be obtained by defining its relation, with other quantities, whose dimensions in M, L and T are known. Numerical Problems on Dimensional Analysis Class 11 Physics · Units and Measurements SQ Dimensional Formulae Practice Set Derive dimensions and apply the principle of…
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Numerical Problems Based on Measurement of Time for Class 11 Physics
Last modified on:5 months agoReading Time:6Minutes Numerical Problems on Time Measurement Class 11 Physics · Units and Measurements SQ Time Scales and Accuracy Practice Set Apply dimensional analysis and unit conversions Ch 2 · Units and Measurements 1 Find the number of times the human heart beats in the life of 60 years of a man,…
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Numerical Problems Based on Indirect Methods for Small Distances for Class 11 Physics
Last modified on:5 months agoReading Time:6Minutes Numerical Problems on Indirect Methods for Small Distances Class 11 Physics · Units and Measurements SQ Atomic Volume and Film Thickness Apply volume formulas to estimate molecular dimensions Ch 2 · Units and Measurements 1 The radius of a muonic hydrogen atom is $2.5 \times 10^{-13}\text{ m}$. What is the…
