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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Important Derivations for Class 12 Physics Chapter 6 Electromagnetic Induction
Last modified on:3 years agoReading Time:8MinutesImportant Derivations for Class 12 Physics Chapter 6 Electromagnetic Induction (1) Derivation of Emf induced in a rod moving in a uniform magnetic field. The magnetic flux linked with the area SPQR is: $$ \phi_R=B A \cos \theta=B l x \cos 0=B l x $$ As the rod PQ is moving…
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MCQ Questions for Class 12 Business Studies Chapter 1 Nature and Significance of Management
Last modified on:3 years agoReading Time:10MinutesMCQ Questions for Class 12 Business Studies Chapter 1 Nature and Significance of Management Here we are providing MCQ Questions for CBSE Class 12 Business Studies Chapter 1 Nature and Significance of Management. You May Also Like: Importance of MCQ Questions for CBSE Class 12 Business Studies Multiple Choice Questions (MCQs)…
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Assertion Reason Questions for Class 7 Maths Chapter 7 Congruence of Triangles
Last modified on:3 years agoReading Time:4Minutes[Download] Assertion Reason Questions for Class 7 Maths Chapter 7 Congruence of Triangles Here we are providing assertion reason questions for CBSE Class 7 Maths Chapter 7 Congruence of Triangles Related Posts What is Assertion Reason Questions for Class 7 Maths? Assertion-reason questions are a type of question format used in…
