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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Numerical Problems on Electric Power and Energy
Last modified on:5 months agoReading Time:27MinutesHere we are providing numerical problems based on electrical power and energy. These problems are useful for students studying in class 10. Practice these questions to master these topics. Class 10 Numerical Problems Useful for Class 10 Students Topics Covered Electric Power and Energy No. of Questions 70 Type Numerical Problems…
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Extra Questions for Class 10 Science Chapter 12 Electricity
Last modified on:4 years agoReading Time:15MinutesExtra Questions for Class 10 Science Chapter 12 Electricity Q.1. Name a device that helps to maintain a potential difference across a conductor.Answer. Cell or battery Q.2. Define 1 volt. Express it in terms of SI unit of work and charge calculate the amount of energy consumed in carrying a charge…
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Extra Questions for Class 10 Science Chapter 13 Magnetic Effect of Electric Current
Last modified on:4 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…
