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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NCERT Exemplar Solution for Class 7 Maths Unit 11 Exponent
Last modified on:3 years agoReading Time:7MinutesNCERT Exemplar Solution for Class 7 Maths Unit 11 Exponent Is it Necessary to Solve NCERT Exemplar Books for Class 7 Maths? While it is not absolutely necessary to solve the NCERT Exemplar books for Class 7 Maths, it can be very helpful for students to improve their understanding of the…
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NCERT Exemplar Solution for Class 7 Maths Unit 2 Fractions and Decimals
Last modified on:3 years agoReading Time:7MinutesNCERT Exemplar Solution for Class 7 Maths Unit 2 Fractions and Decimals Is it Necessary to Solve NCERT Exemplar Books for Class 7 Maths? While it is not absolutely necessary to solve the NCERT Exemplar books for Class 7 Maths, it can be very helpful for students to improve their understanding…
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NCERT Exemplar Solution for Class 7 Maths Unit 3 Data Handling
Last modified on:3 years agoReading Time:7MinutesNCERT Exemplar Solution for Class 7 Maths Unit 3 Data Handling Is it Necessary to Solve NCERT Exemplar Books for Class 7 Maths? While it is not absolutely necessary to solve the NCERT Exemplar books for Class 7 Maths, it can be very helpful for students to improve their understanding of…
