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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Extra Questions For Class 10 Maths Chapter 1 Real Numbers Based On Euclid’s Division Algorithm
Last modified on:3 years agoReading Time:9MinutesExtra Questions On Euclid’s Division Algorithm Euclid’s division algorithm is a technique to compute the Highest Common Factor (HCF) of two given positive integers. Recall that the HCF of two positive integers a and b is the largest positive integer d that divides both a and b. To obtain the HCF…
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Extra Questions For Class 10 Maths Chapter 1 Real Numbers Based On Euclid’s Division Lemma
Last modified on:3 years agoReading Time:12MinutesExtra Questions On Euclid’s Division Lemma Given positive integers a and b, there exist unique integers q and r satisfying a = bq + r, where 0 ≤ r < b .Here we call ‘a’ as dividend, ‘b’ as divisor, ‘q’ as quotient and ‘r’ as remainder.≫ Dividend = (Divisor x…
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Physics MCQs for Class 12 with Answers Chapter 5 Magnetism and Matter
Last modified on:5 years agoReading Time:11MinutesQ.1. Ferrites may be:(a) ant. ferromagnetic(b) ferromagnetic(c) ferrimagnetic(d) None of the above Answer (b) ferromagnetic Q.2. The magnetic lines of force inside a bar magnet:(a) do not exist(b) depends on area of cross-section of bar magnet(c) are from N-pole to S-pole of the magnet(d) are from S-pole to N-pole of the…
