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 11 Physics Chapter 5 Laws of Motion
Last modified on:4 years agoReading Time:16MinutesMCQ Questions for Class 11 Physics Chapter 5 Laws of Motion Q.1. Inertia is the property of a body linked to tendency of a body(a) to change its position(b) to change its direction(c) to change the momentum(d) to resist any change in its state Answer Answer: (d) Inertia is defined as…
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MCQ Questions for Class 11 Physics Chapter 2 Units and Measurements
Last modified on:4 years agoReading Time:8MinutesMCQ Questions for Class 11 Physics Chapter 2 Units and Measurements Q.1. The density of a material in SI units is 128 kg m-3 . In certain units in which the unit of length is 25 cm and the unit of mass is 50 g, the numerical value of density of…
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MCQ Questions for Class 11 Physics Chapter 1 Physical World
Last modified on:4 years agoReading Time:7MinutesMCQ Questions for Class 11 Physics Chapter 1 Physical World Q.1. The person who has been awarded the title of the Father of Physics of 20th century is(a) Madame Curie (b) Sir C.V. Raman(c) Neils Bohar (d) Albert Einstein Answer Answer: (d) Q.2. The branch of science which deals with nature…
