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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CBSE Class 10 Science Chapter 6 Life Processes Unsolved MCQ
Last modified on:3 years agoReading Time:24MinutesCBSE Class 10 Science Chapter 6 Life Processes Unsolved MCQ Q.1. Tick the correct statement.(a) Arteries carry blood away from the heart while veins carry blood towards heart.(b) Veins carry blood away from the heart while arteries carry blood towards heart.(c) Both of them carry blood in the same direction.(d) Either…
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NEET DPP Biology Ch-08 Cell: The Unit of Life
Last modified on:5 years agoReading Time:24Minutes Q.1. The cell organelle involved in glycosylation of protein is(a) ribosome(b) peroxisome(c) endoplasmic reticulum(d) mitochondria Answer Answer: (c) Glycosylation is the process or result of addition of saccharides to proteins and lipids. The process is one of the four principal co-translational and post-translational modification steps in the synthesis of membrane…
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NEET DPP Biology Ch-07 Structural Organisation in Animals
Last modified on:5 years agoReading Time:15MinutesQ.1. The kind of epithelium which forms the inner walls of blood vessels is(a) cuboidal epithelium(b) columnar epithelium(c) ciliated columnar epithelium(d) squamous epithelium Q.2. The cell junctions called tight, adhering and gap junctions are found in(a) connective tissue (b) epithelial tissue(c) neural tissue (d) muscular tissue Q.3. Housefly possesses(a) two pairs…
