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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Reynolds Number
Last modified on:3 years agoReading Time:10MinutesWhat is Reynolds Number? The Reynolds number (Re) is a dimensionless parameter used in fluid mechanics to characterize the flow of a fluid (liquid or gas) around an object or through a conduit. It relates the inertial forces to the viscous forces in the fluid and helps determine the type of…
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Assertion Reason Questions for Class 11 Chemistry Chapter 13 Hydrocarbons
Last modified on:11 months agoReading Time:8MinutesAssertion Reason Questions for Class 11 Chemistry Chapter 13 Hydrocarbons Directions: (a) Assertion and reason both are correct statements and reason is correct explanation for assertion.(b) Assertion and reason both are correct statements but reason is not correct explanation for assertion.(c) Assertion is correct statement but reason is wrong statement.(d) Assertion…
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Numerical Problems on Electric Power and Energy
Last modified on:5 months agoReading Time:72MinutesHere 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:5 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…
