Field at the centre of a circular coil of radius r, through which a cu – McqOptions

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1.	Field at the centre of a circular coil of radius r, through which a current I flows is [MP PMT 1993]
A.	Directly proportional to r
B.	Inversely proportional to I
C.	Directly proportional to I
D.	Directly proportional to \[{{I}^{2}}\]
Answer» D. Directly proportional to \[{{I}^{2}}\]

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