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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Units and Measurements – Concept Booster | Class 11 Physics CBSE
Last modified on:4 months agoReading Time:19Minutes 📖 How to Use This Page Read each concept carefully, then check the formula, common mistake, and exam tip before moving to the next. This page covers Units and Measurement completely for CBSE Class 11 Physics. Key Concepts Class 11 · Physics · Units and Measurement 💡 Units & Measurement…
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Electric Charges and Fields – Mistake Buster | Class 12 Physics CBSE
Last modified on:4 months agoReading Time:11Minutes ⚠ Mistake Buster — How to Use This page lists the 5 most common mistakes students make in Electric Charges and Fields. For each mistake: read what goes wrong → understand why → memorise the correct approach. Check this page the night before your exam. 5 Mistakes Covered 8–12 Marks…
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Electric Charges and Fields – Formula Flashcards | Class 12 Physics CBSE
Last modified on:4 months agoReading Time:13Minutes ⚡ Formula Flashcard — How to Use Every formula for Electric Charges and Fields is below with its meaning, SI unit, notation, and exam note. Revise all 12 formulas in under 5 minutes. Bookmark for last-night board exam revision. All Formulas Class 12 · Physics · Chapter 1 · Electric…
