A wire of one meter length carries a constant current. The wire is bent to form a circular loop. The magnetic field at the center of this loop is B. The same is now bent to form a circular loop of smaller radius having four turns. The magnetic field at the center of this new loop will be
A
B
4B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
The magnetic field at the center of new loop
where, n is the number of turns in the loop.
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