CBSE Class 12-science Answered
A peculiar question... please help me...
Asked by nitishkrnehu09 | 18 Nov, 2017, 10:38: PM
Expert Answer
Though this problem can be worked out using Biot-severt's law, by intution we can solve
this problem without working out the mathematics.
We know for a polygon of n sides, if n tends to infinity then the polygon tends to circle.
For example for the option (A), if n tends to infinity tan(∏/n) tends to (∏/n) .
Hence the answer given in option (A) is simplifie to μ0I/(2R) which is the magnetic induction vector
for circular loop.
From this we can conclude option (A) is the correct answer.
Similar analysis for other option will not give μ0I/(2R)
Answered by | 20 Nov, 2017, 01:35: PM
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