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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Electric Field of a Line Charge
Last modified on:3 years agoReading Time:3MinutesElectric Field of a Line Charge Positive charge q is distributed uniformly along a line with length 2a, lying along the y-axis between y=–a and y=+a. We are here interested in finding the electric field at point P on the x-axis. Derivation of electric field due to a line charge: Thus,…
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Electric Field Lines
Last modified on:3 years agoReading Time:5MinutesElectric Field Lines Electric charges create an electric field in the space surrounding them. It is useful to have a kind of “map” that gives the direction and indicates the strength of the field at various places. Field lines, a concept introduced by Michael Faraday, provide us with an easy way…
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Human Ear
Last modified on:4 years agoReading Time:3MinutesHuman Ear The human ear, like that of other mammals, contains sense organs that serve two quite different functions: that of hearing and that of head and eye movements. Anatomically, the ear has three distinguishable parts: the outer, middle, and inner ear. How Human Ear Works? Different sounds produced in our surroundings are collected by…
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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…
