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:5 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:5 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:5 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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Physics MCQs for Class 12 with Answers Chapter 13 Nuclei
Last modified on:5 years agoReading Time:24MinutesMCQ based on Nuclei: Q.1. For a nuclear fusion process, suitable nuclei are(a) any nuclei(b) heavy nuclei(c) lighter nuclei(d) nuclei lying in the middle of periodic table Answer Answer: (c) Q.2. In the uranium radioactive series, the initial nucleus is 92U238 and that the final nucleus is 82Pb206. When uranium nucleus…
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Physics MCQs for Class 12 with Answers Semiconductor Electronics
Last modified on:5 years agoReading Time:31MinutesQ.1. In a semiconductor(a) there are no free electrons at 0 K(b) there are no free electrons at any temperature(c) the number of free electrons increases with pressure(d) the number of free electrons is more than that in a conductor Answer Answer: (a) Q.2. Let nh and ne be the number…
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Electric Charges and Fields Class 12 Physics MCQ Questions
Last modified on:2 years agoReading Time:38MinutesHere we are providing mcq questions for class 12 physics chapter 1 electric charges and fields. Students are suggested to go through each and every question to perform better in exams. Chapter Electric Charges and Fields Type of Questions MCQ Nature of Questions Competency Based Questions Board CBSE Class 12 Subject…
