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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Class 9 Science MCQs From Chapter 2 Is Matter Around Us Pure
Last modified on:5 years agoReading Time:8MinutesQ.1. What is the name of the metal which exists in liquid state at room temperature?(a) Sodium(b) Potassium(c) Mercury(d) Bromine Answer (c) Mercury Q.2. When the liquid is spun rapidly, the denser particles are forced to the bottom and the lighter particles stay at the top. This principle is used in:(a) Centrifugation(b) Fractional…
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Class 9 Science MCQs From Chapter 1 Matter in Our Surroundings
Last modified on:5 years agoReading Time:13Minutes1. In which of the following conditions, the distance between the molecules of hydrogen gas would increase?(i) Increasing pressure on hydrogen contained in a closed container(ii) Some hydrogen gas leaking out of the container (iii) Increasing the volume of the container of hydrogen gas(iv) Adding more hydrogen gas to the container without…
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Class 9 Science Chapter 6 Tissue Study Notes
Last modified on:5 years agoReading Time:1Minute
