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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Extra Questions For Class 9 Science Chapter 1 Matter in Our Surroundings
Last modified on:5 years agoReading Time:29MinutesExtra Questions For Class 9 Science Chapter 1 Matter in Our Surroundings Very Short Answer Type Questions (One Mark Each) Q.1. Degree Celsius and Kelvin are two units of measuring temperature. Which of these are SI and non-SI units ? Answer Ans. Degree Celsius – Non-SI. Kelvin – SI. Q.2. What…
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Numerical Problems Based on Chemistry Chapter 1 Solid State
Last modified on:4 years agoReading Time:15MinutesNumerical Problems Based on Class 12 Chemistry Chapter 1 Solid State Q.1. A cubic solid is made up of two clements X and Y. Atoms Y are present at the corners of the cube and atoms X at the body centre. What is the formula of the compound ? Q.2. When…
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Integer Type Questions of Chapter Solid State for JEE Chemistry
Last modified on:5 years agoReading Time:5MinutesInteger Type Questions Based On Chapter Solid State The answer to each of the following question is a single digit-integer ranging from 0 to 9. Fill in the correct digit. Q.1. Silver (atomic weight = 108 g mol-l) has a density of 10.5 g cm3. The number of silver atoms on…
