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JEE MAIN 2020
08-01-20 S2
Question
A very long wire ABDMNDC is shown in figure carrying current I. AB and BC parts are straight, long and at right angle. At D wire forms a circular turm DMND of radius R. AB, BC parts are tangential to circular turn at N and D. Magnetic field at the centre of circle is
Select the correct option:
A
$\frac{\mu_0 I}{2 \pi R}(\pi+1)$
B
$\frac{\mu_0 I}{2 R}$
C
$\frac{\mu_0 I}{2 \pi R}\left(\pi+\frac{1}{\sqrt{2}}\right)$
D
$\frac{\mu_0 I}{2 \pi R}\left(\pi-\frac{1}{\sqrt{2}}\right)$
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
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