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 12 Chapter 1 Electric Charges and Fields
Last modified on:4 years agoReading Time:31MinutesExtra Questions For Class 12 Physics Chapter 1 Electric Charges and Fields We are providing chapter-wise extra questions for class 12 physics. Students can practice these questions to score better marks in their exam. Very Short Answer Questions: Q.1. Give two points of distinction between charge and mass.Ans. Charge can be…
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Extra Questions For Class 10 Science Chapter 10 Reflection and Refraction of Light
Last modified on:5 years agoReading Time:17MinutesExtra Questions On Reflection and Refraction of Light Reflection is the bouncing back of light when it strikes on a polished surface like mirror. Laws of Reflection: (1) Angle of incidence is equal to the angle of reflection.(2) The incident ray, the reflected ray and the normal at the point of…
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Study Notes for Class 9 Science Chapter 8 Motion
Last modified on:5 years agoReading Time:18MinutesStudy Notes for Class 9 Science Chapter 8 Motion Topics to be covered: What is motion? Describing motion of a particle Position, path length and displacement Speed and Velocity Rate of change of velocity Distance-time graph Velocity-time graph Equations of Motion Uniform Circular Motion What is motion? State of Rest: An…
