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 VSQs for Class 11 with Answers Chapter 11 Thermal Properties of Matter
Last modified on:5 years agoReading Time:9MinutesQ.1. What do you mean by triple point ? Answer Answer: It is a particular point in the phase diagram, representing a particular pressure and temperature at which a substance can coexist in all three phases in solid, liquid and gas. Q.2. Why the triple point of water is considered as…
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Physics VSQs for Class 11 with Answers Chapter 9 Elasticity
Last modified on:5 years agoReading Time:7MinutesQ.1. Why do a spring balance show wrong measure after long use? Answer Answer: After long use the spring gradually loses its elastic nature and doesn’t come back to its initial configuration completely after the weight is withdrawn. Q.2. Which is more elastic water or air and why? Answer Answer: Water…
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Physics VSQs for Class 11 with Answers Chapter 15 Waves
Last modified on:5 years agoReading Time:10MinutesQ.1. What type of mechanical wave exists in air and inside water? Answer Answer: Longitudinal waves exist in both air and inside the water. Q.2. What is the phase difference between the wave y = a cos(wt + kx) and y = a sin (wt + kx)? Answer Answer: Phase difference…
