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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Extra Questions For Class 10 Maths Chapter 1 Real Numbers Based On Euclid’s Division Algorithm
Last modified on:3 years agoReading Time:9MinutesExtra Questions On Euclid’s Division Algorithm Euclid’s division algorithm is a technique to compute the Highest Common Factor (HCF) of two given positive integers. Recall that the HCF of two positive integers a and b is the largest positive integer d that divides both a and b. To obtain the HCF…
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Extra Questions For Class 10 Maths Chapter 1 Real Numbers Based On Euclid’s Division Lemma
Last modified on:3 years agoReading Time:12MinutesExtra Questions On Euclid’s Division Lemma Given positive integers a and b, there exist unique integers q and r satisfying a = bq + r, where 0 ≤ r < b .Here we call ‘a’ as dividend, ‘b’ as divisor, ‘q’ as quotient and ‘r’ as remainder.≫ Dividend = (Divisor x…
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Physics MCQs for Class 12 with Answers Chapter 5 Magnetism and Matter
Last modified on:5 years agoReading Time:11MinutesQ.1. Ferrites may be:(a) ant. ferromagnetic(b) ferromagnetic(c) ferrimagnetic(d) None of the above Answer (b) ferromagnetic Q.2. The magnetic lines of force inside a bar magnet:(a) do not exist(b) depends on area of cross-section of bar magnet(c) are from N-pole to S-pole of the magnet(d) are from S-pole to N-pole of the…
