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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Case Study Questions for Class 11 Physics Chapter 11 Thermal Properties of Matter
Last modified on:3 years agoReading Time:5MinutesCase Study Questions for Class 11 Physics Chapter 11 Thermal Properties of Matter Case Study Questions: Question 1: Specific Heat Capacity Heat capacity of a substance is defined as where ΔQ is the amount of heat supplied to the substance to change its temperature from T to T + ΔT. Specific…
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Case Study Questions for Class 11 Physics Chapter 10 Mechanical Properties of Fluids
Last modified on:3 years agoReading Time:6MinutesCase Study Questions: Question 1: The property due to which the free surface of liquid tends to have minimum surface area and behaves like a stretched membrane is called surface tension. It is a force per unit length acting in the plane of interface between the liquid and the bounding surface…
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Case Study Questions for Class 11 Physics Chapter 9 Mechanical Properties of Solids
Last modified on:3 years agoReading Time:4MinutesCase Study Questions for Class 11 Physics Chapter 9 Mechanical Properties of Solids Case Study Questions: Question 1: The graph shown below shows qualitatively the relation between the stress and the strain as the deformation gradually increases. Within Hooke’s limit for a certain region stress and strain relation is linear. Beyond…
