The magnetic induction at the centre of a current carrying circular of – McqOptions

MCQOPTIONS

1.	The magnetic induction at the centre of a current carrying circular of coil radius r, is [J & K CET 2004]
A.	Directly proportional to r
B.	Inversely proportional r
C.	Directly proportional to r2
D.	Inversely proportional to r2
Answer» C. Directly proportional to r2

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