Published by:
CGP EDU Academic Team
Published on: August 11, 2026
A long conducting wire having a current I flowing through it, is bent into a circular coil of 
turns. Then it is bent into a circular coil of 
turns. The magnetic field is calculated at the centre of coils in both the cases. The ratio of the magnetic field in first case to that of second case is:
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
Length Remains Same.
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