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 12 Biology Chapter 10 Microbes in Human Welfare
Last modified on:4 years agoReading Time:11MinutesMCQ Questions for Class 12 Biology Chapter 10 Microbes in Human Welfare Here we are providing MCQ questions for Class 12 Biology chapter 10 Microbes in human welfare. These questions are prepared by subject experts and is according to the latest syllabus. Students can practice these questions to score better marks…
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MCQ Questions for Class 12 Biology Chapter 9 Strategies for Enhancement in Food Production
Last modified on:4 years agoReading Time:9MinutesStrategies for Enhancement in Food Production Here we are providing MCQ questions for class 12 biology chapter 9 Strategies for enhancement in food production. These questions are based on NCERT and prepared by subject experts. Students can practice these questions to score better in the exam. Q.1. Domestication of silk worm…
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MCQ Questions for Class 12 Biology Chapter 8 Human Health and Diseases
Last modified on:4 years agoReading Time:29MinutesMCQ Questions for Class 12 Biology Chapter 8 Human Health and Diseases Q.1. Who is called the father of surgery?(A) Hippocrates (B) Susruta(C) Charaka (D) Robert Koch Answer Answer: B Q.2. Epidemiology is more helpful in(A) Non-communicable disease (B) Communicable disease(C) Selective mating population (D) Random mating population. Answer Answer: B…
