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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IIT Foundation Mathematics Problems on Probability
Last modified on:5 years agoReading Time:4MinutesQ.1. If two coins are tossed once, what is the probability of getting at least one head ? Answer Answer: 3/4 Q.2. Two unbiased dice are rolled. Find the probability of getting a multiple of 2 on one die and a multiple of 3 on the other die ? Answer Answer:…
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Physics VSQs for Class 11 with Answers Chapter 7 System of Particles and Rotational Motion
Last modified on:5 years agoReading Time:10MinutesQ.1. Should the centre of mass of a body necessarily lie inside the body? Explain. Answer Answer: No, it may lie outside the body. In case of semicircular ring, it is at the centre which is outside the ring. Q.2. What physical quantities do the following represent?(a) Moment of linear momentum(b)…
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Physics VSQs for Class 11 with Answers Chapter 6 Work Energy and Power
Last modified on:5 years agoReading Time:9MinutesQ.1. A man raises a mass ‘m’ to a height ‘h’ and then shifts it horizontally by a length ‘x’. What is the work done against the force of gravity? Answer Answer: Work done against gravity is mgh, as no work is done in the horizontal displacement. Q.2. Name and define…
