Questions
A current i is flowing in a hexagonal coil of side / [Fig.]. The magnetic induction at the centre of the coil will be
a
3μ0iπl
b
μ0i3πl
c
μ0i33πl
d
33μ0iπl
detailed solution
Correct option is A
See fig. Every angle of equilateral triangle is 60°Distance OG=3l/2 The magnetic induction at O is given byB=6×BAB∴ B=6×μ0i4π(3l/2)sin30∘+sin30∘=6μ0i4π(3l/2)×2sin30∘=3μ0iπlTalk to our academic expert!
Similar Questions
ABCD is a square loop made of a uniform conducting wire. The current enters the loop at A and leaves at D. The magnetic field is
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