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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CBSE 10 Science Ch-13 Magnetic Effects of Electric Current (Solved assignment)
Last modified on:5 years agoReading Time:9MinutesChapter – 13 Magnetic Effects Of Electric Current (One Mark Question) Q.1 Why does the bulk of iron fillings stick to the ends of a bar magnet and not at its centre? Ans. Because at the ends magnetic strength is maximum and at centres magnetic strength is least. Q.2 If the…
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NEET Physics Units, Dimensions and Measurement Notes
Last modified on:5 years agoReading Time:19Minutes1. Topics to be covered in this lesson 1.1 Units1.2 Dimensions1.3 Dimensional analysis and applications1.4 Limitations of Dimensional method1.5 Accuracy and Precision1.6 Significant figures1.7 Errors in measurement1.8 Measuring Instruments SOLVED EXAMPLES 1.1 UNITS Measurement of any physical quantity involves its comparison with a certain basic, reference standard called unit. Any standard unit must have two properties(a) Invariability(b) AvailabilityThe result of…
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Class 10 Science Human Eye (Important Questions with Answers)
Last modified on:5 years agoReading Time:7MinutesImportant Questions With Answers 1. How is the eye lens held in its position? Ans: – Ciliary muscles hold the eye in position. 2. What is meant by near point? Ans: – The nearest point up to which an eye can see clearly is called the near point of the eye.…
