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 Questions for Class 9 Science Chapter 7 Diversity in Living Organisms
Last modified on:3 years agoReading Time:8MinutesMCQ Questions for Class 9 Science Chapter 7 Diversity in Living Organisms Q.1. Which of the following is the largest phylum?(A) Arthropoda (B) Annelida (C) Mollusca (D) Coelenterate. Check Answer Answer: (A) Q.2. Basic taxonomic category is(A) Population (B) Species (C) Variety (D) Breed Check Answer Answer: (B) Q.3. Amoeba has…
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Numerical Problems Based on Total Internal Reflection and Critical Angle for Class 12 Physics
Last modified on:4 years agoReading Time:5MinutesNumerical Problems Based on Total Internal Reflection and Critical Angle for Class 12 Physics Here we are providing numerical problems based on topic total internal reflection and critical angle for class 12 physics. Q.1. Calculate the critical angle for glass-air surface, if a ray of light which is incident in air…
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Numerical Problems Based on Refraction of Light for Class 12 Physics
Last modified on:4 years agoReading Time:8MinutesNumerical Problems Based on Refraction of Light for Class 12 Physics Here we are providing numerical problems based on refraction of light for class 12 physics. This covers problems on lateral shift, real and apparent depth. Students can practice these questions for better understanding of the concepts and formulae. Q.1. A…
