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 12 Chemistry Ch-Surface Chemistry (MCQ)
Last modified on:5 years agoReading Time:15Minutes1. Which of the following process does not occur at the interface of phases?(i) crystallisation(ii) heterogenous catalysis(iii) homogeneous catalysis(iv) corrosion Answer Answer: (iii) homogeneous catalysis Explanation: In homogeneous catalysis, only, the reactant and product are in same phase and composition is uniform throughout. 2. At the equilibrium position in the process…
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Chemistry MCQs for Class 12 with Answers Chapter 14 Biomolecules
Last modified on:5 years agoReading Time:17MinutesMCQs Based On Class 12 Chemistry Chapter 14 Biomolecules MCQ Questions for Class 12 Chemistry are prepared by the subjects experts according to the latest pattern. These MCQs are very important for students who wants to score well in CBSE Board Exam. These MCQs on chapter 14 Biomolecules will also help…
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Physics MCQs for Class 12 with Answers Chapter 10 Wave Optics
Last modified on:5 years agoReading Time:31MinutesQ.1. The locus of all particles in a medium, vibrating in the same phase is called(a) wavelet(b) fringe(c) wave front(d) None of these Answer Answer: (c) Q.2. Which of the following is correct for light diverging from a point source?(a) The intensity decreases in proportion for the distance squared.(b) The wavefront…
