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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Extra Questions for Class 10 Science Chapter 13 Magnetic Effect of Electric Current
Last modified on:5 years agoReading Time:11MinutesQ.1. Name the type of current: (a) used in household supply. (b) given by a cell.Answer. (a) Alternating current. (b) Direct current. Q.2. State the observation made by Oersted on the basis of his experiment with current carryingconductors.Answer. The electric current passing through a conducting wire produces magnetic effect. Q.3. How…
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Case Study Questions for Class 10 Science Chapter 15 Our Environment
Last modified on:4 years agoReading Time:2MinutesCase Study Questions for Class 10 Science Chapter 15 Our Environment Question 1: Food web is the interconnection of different food chains, which correlate at various trophic levelsoperating in an ecosystem. (i) How many food chains are present in the given food web? (ii) Name the primary consumer in the given…
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Case Study Questions for Class 10 Science Chapter 13 Magnetic Effect of Electric Current
Last modified on:4 years agoReading Time:5MinutesCase Study Questions for Class 10 Science Chapter 13 Magnetic Effect of Electric Current Question 1: A student wants to study the working of electric motor. He used a model of DC motor for electromagnetism as shown in figure. He fixed the two ends of the coil to a pair of…
