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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Questions on Magnetic Materials
Last modified on:5 years agoReading Time:5MinutesQ1. The permeability of a magnetic material is 0.9983. Name the type of magnetic materials it represents. Q2. In what way is the behaviour of a diamagnetic material different from that of a paramagnetic, when kept in an external magnetic field? Q3. Depict the behaviour of magnetic field lines in the…
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Questions on Earth’s Magnetism
Last modified on:5 years agoReading Time:5MinutesQ1. Where on the surface of Earth is the vertical component of Earth’s magnetic field zero? Q2. The horizontal component of the earth’s magnetic field at a place is B and angle of dip is 60°. What is the value of vertical component of earth’s magnetic field at equator?…
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Last modified on:5 years agoReading Time:1MinuteMIND MAP Download our all new app for latest notes and useful assignments. One App For All Your Needs.
