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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Physics MCQs for Class 12 with Answers Chapter 3 Current Electricity
Last modified on:7 months agoReading Time:32MinutesMCQs based on Current Electricity: Q.1. In a current carrying conductor the net charge is(a) 1.6 x 10–19 coulomb (b) 6.25 x 10–18 coulomb(c) zero (d) infinite Answer Answer: (c) Explanation: In a current carrying conductor, the net charge is zero. Q.2. The current which is assumed to be flowing in…
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MCQ Questions on Refraction of Light for Class 10 Science
Last modified on:3 years agoReading Time:15Minutes Question 1:Four students showed the following traces of the path of a ray of light passing through a rectangular glass slab.The trace most likely to be correct is that of student:(a) I (b) II (c) III …
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NEET Magnetic Effect of Electric Current Important Questions
Last modified on:5 years agoReading Time:3MinutesCheck important questions and answers for NEET Exam. Practice these questions to improve your concepts and perform better in the actual test. These questions for NEET designed by GURUKUL is one of the best and complete study material as it covers all the important questions from the chapters which are in syllabus. We have…
