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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Case Study Questions for Class 11 Chemistry Chapter 4 Chemical Bonding and Molecular Structure
Last modified on:3 years agoReading Time:4Minutes Case Study Questions for Class 11 Chemistry Chapter 4 Chemical Bonding and Molecular Structure Case Study/Passage Based Questions: Question 1: Lewis dot structure of HCN molecule is given below. Answer questions on the basis of this structure. (i) How many electrons are involved in the sigma bond between the carbon…
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Case Study Questions for Class 11 Chemistry Chapter 3 Classification of Elements and Periodicity in Properties
Last modified on:3 years agoReading Time:3Minutes Case Study Questions for Class 11 Chemistry Chapter 3 Classification of Elements and Periodicity in Properties Case Study Questions: Question 1: The IE1 and IEII in kJ/mol of a few elements are given in the following table: (i) Which of the above element is likely to be alkali metal?(A) P…
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Case Study Questions for Class 11 Chemistry Chapter 2 Structure of Atom
Last modified on:3 years agoReading Time:5Minutes Case Study Questions for Class 11 Chemistry Chapter 2 Structure of Atom Case Study/Passage Based Questions: Question 1: Electron moves around the nucleus in circular orbitals in fixed energy paths. As far as electron moves in these orbits neither energy is absorbed nor liberated. But when electron move from lower…
