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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THE SOLID STATE
Last modified on:5 years agoReading Time:25MinutesPoints to Remember 1. HCP and CCP have equal efficiency i.e., 74% of space is occupied and coordination number is 12. CCP arrangement has FCC lattice. 2. Coordination number is the number of nearest neighbouring points surrounding a particular lattice point (point may be atom, ions or molecules). 3. Packing ef…
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Career Guidance
Last modified on:8 years agoReading Time:5MinutesThere are a lots of career options After 12, for Science stream – Medical (Physics, Chemistry & Biology) and Non – Medical (Mathematics, Physics, Chemistry) Courses for PCMB (Physics, Chemistry, Maths & Biology) Dentist – BDS (5 years) Doctor – BHMS, BAMS, MBBS (5.5 years) Bachelor of Naturopathy & Yogic Science –…
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NCERT SOLUTION (Ch-2)
Last modified on:5 years agoReading Time:14MinutesAcids, Bases & Salts PAGE- 18 Question 1: You have been provided with three test tubes. One of them contains distilled water and the other two contain an acidic solution and a basic solution, respectively. If you are given only red litmus paper, how will you identify the contents of each test tube? Answer…
