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L is a circular ring made of a uniform w...

`L` is a circular ring made of a uniform wire, currents enters and leaves the ring through straight conductors which, if produces, would have passed through the centre `C` of ring. The magnetic field at `C`

(i) due to the straight conductors is zero
(ii) due to the loop is zero
(iii) due to the loop is proportional to `theta`
(iv) due to loop is proportional to `(pi-theta)`

A

due to the straight conductors is zero

B

due to the loop is zero

C

due to path II is proportional to `theta`.

D

due to the path I is proportional `(pi-theta)`

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The correct Answer is:
B
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