A straight section PQ of a circuit lies along the X-axis from \[x=-\fr – McqOptions

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1.	A straight section PQ of a circuit lies along the X-axis from \[x=-\frac{a}{2}\] to \[x=\frac{a}{2}\] and carries a steady current i. The magnetic field due to the section PQ at a point X = + a will be [MP PMT 1987]
A.	Proportional to a
B.	Proportional to \[{{a}^{2}}\]
C.	Proportional to \[1/a\]
D.	Zero
Answer» E.

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