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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Class 11 Physics Oscillation (For Competitive Exams)
Last modified on:7 years agoReading Time:1MinuteClass 11 Physics Oscillation Section-A
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Class 11 Physics Rotational Motion
Last modified on:5 years agoReading Time:3Minutes Questions A disc of metal is melted and a solid sphere is formed. What will happen to the moment of inertia about a vertical axis passing through the centre? What are the unit and dimensions of moment of inertia ? Is it a vector ? Is radius of gyration…
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ICSE Physics Class 10 Syllabus
Last modified on:7 years agoReading Time:29Minutes ICSE Physics Class 10 Syllabus There is one paper of two hours duration carrying 80 marks and Internal Assessment of practical work carrying 20 marks. The paper is divided into two sections: Section I (40 marks) and Section II (40 marks). Section I (compulsory) contains short answer questions on the entire…
