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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Numerical Problems Based on Indirect Methods for Long Distances for Class 11 Physics
Last modified on:5 months agoReading Time:10Minutes Numerical Problems on Indirect Methods for Long Distances Class 11 Physics · Units and Measurements SQ Echo and Measurement Practice Set Apply the echo formula $d = \frac{v \times t}{2}$ and parallax concepts Ch 2 · Units and Measurements 1 In a submarine fitted with a SONAR, the time interval…
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Numerical Problems Based on Electric Flux for Class 12 Physics
Last modified on:5 months agoReading Time:14MinutesElectric flux The term flux implies some kind of flow. Flux is the property of any vector field. The electric flux is a property of electric field. The electric flux through a given area held inside an electric field is the measure of the total number of electric lines of force…
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Numerical Problems Based on Applications of Gauss’s Law for Class 12 Physics
Last modified on:5 months agoReading Time:10Minutes Numerical Problems on Gauss’s Law Applications Class 12 Physics · Electric Charges and Fields SQ Electric Field of Continuous Charge Distributions Apply Gauss’s Law formulas for line charges and infinite plates Ch 1 · Electrostatics 1 An infinite line charge produces a field of $9 \times 10^4\text{ NC}^{-1}$ at a…
