A circular current carrying coil has a radius R. The distance from the center of the coil on the axis where the magnetic induction will be 
to its value at the center of the coil, is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
For a circular coil of radius a carrying a current 
, the magnetic field at point 
, distance 
from coil is given by
(i)
At the center of coil 
(ii)
Given, 
Given, 
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