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 9 Science Chapter 12 Sound
Last modified on:2 years agoReading Time:7Minutes Board CBSE Useful for Class 9 Students Subject Science Chapter Chapter 12 Sound Question Type Case Study Questions No. of Questions 1 With Answers Yes Important Link Class 9 Chapterwise Case Study Case Study Questions for Class 9 Science Chapter 12 Sound Here we are providing case study questions for…
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MCQ Questions for Class 10 Science Chapter 14 Sources of Energy
Last modified on:3 years agoReading Time:7MinutesMCQ Questions for Class 10 Science Chapter 14 Sources of Energy Q.1. Which of the following is the renewable source of energy?(A) natural gas (B) petroleum (C) coal (D) wind Show Answer Answer: (D) Q.2. The energy liberated by charcoal on burning is(A) 30 kJ (B) 33 kJ (C) 35 kJ…
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MCQ Questions for Class 10 Science Chapter 13 Magnetic Effects of Electric Current
Last modified on:3 years agoReading Time:26MinutesMCQ Questions for Class 10 Science Chapter 13 Magnetic Effects of Electric Current Here we are providing MCQ questions for class 10 science chapter 13 Magnetic effects of Electric Current. These questions useful for your exam, are prepared by subject expert. Practicing these questions will help you to perform better in…
