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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Charging of Insulators
Last modified on:4 years agoReading Time:2Minutes 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…
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Charging by Contact
Last modified on:4 years agoReading Time:2Minutes Charging by Contact When a negatively charged ebonite rod is rubbed on a metal object, such as a sphere, some of the excess electrons from the rod are transferred to the sphere. Once the electrons are on the metal sphere, where they can move readily, they repel one another and…
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Charging by Rubbing
Last modified on:4 years agoReading Time:3Minutes Charging by Rubbing The simplest way to charge certain bodies is to rub them against each other. When a glass rod is rubbed with a silk cloth, the glass rod acquires some positive charge and the silk cloth acquires negative charge by the same amount. The explanation of appearance of…
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MCQ based on Gauss Law for NEET
Last modified on:5 years agoReading Time:6MinutesQ.1. What about Gauss’s theorem is not incorrect?(a) It can be derived by using Coulomb’s Law(b) It is valid for conservative field obeys inverse square root law(c) Gauss’s theorem is not applicable in gravitation(d) Both (a) & (b) Answer Answer: (d) Q.2. A uniformly charged conducting sphere of 4.4 m diameter…
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MCQ based on Electric Flux for NEET
Last modified on:5 years agoReading Time:7MinutesQ.1. The number of electric lines of force that radiate outwards from one coulomb of charge in vacuum is(a) 1.13 × 1011 (b) 1.13 × 1010 (c) 0.61 × 1011 (d) 0.61 × 109 Answer Answer: (a) Φ = q/ε0 = 1.13 × 1011 Q.2. If the electric flux entering and…
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Case Study Questions for Class 12 Chemistry Chapter 12 Aldehydes, Ketones and Carboxylic Acids
Last modified on:5 years agoReading Time:4MinutesThere is Case Study Questions in class 12 Chemistry in session 2020-21. For the first time, the board has introduced the case study questions in the board exam. The first two questions in the board exam question paper will be based on Case Study and Assertion & Reason. The first question…
