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 7 Maths Chapter 2 Fractions and Decimals
Last modified on:3 years agoReading Time:15Minutes Extra Questions for Class 7 Maths Chapter 2 Fractions and Decimals Here we are providing extra questions for CBSE Class 7 Maths Chapter 2 Fractions and Decimals. Related Posts Chapter List Latest Chapter List (2023-24) There is total 13 chapters. Chapter 1 Integers Extra QuestionsChapter 2 Fractions and Decimals Extra…
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Physics Practical Class 12 Viva Questions
Last modified on:3 years agoReading Time:20Minutes [PDF] Physics Practical Class 12 Viva Questions Here you will find viva questions for class 12 physics practicals. Experiment wise viva questions are provided with answers. 2. Measurement of Electromotive Force and Potential Difference 3. Galvanometer, Ammeter and Voltmeter 4. Frequency of AC (Alternating Current) Mains 5. Focal Length of…
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Extra Questions for Class 7 Maths Chapter 1 Integers
Last modified on:3 years agoReading Time:15Minutes Extra Questions for Class 7 Maths Chapter 1 Integers Here we are providing extra questions for CBSE Class 7 Maths Chapter 1 Integers. Chapter List Latest Chapter List (2023-24) There is total 13 chapters. Chapter 1 Integers Extra QuestionsChapter 2 Fractions and Decimals Extra QuestionsChapter 3 Data Handling Extra QuestionsChapter…
