Magnetic field strength at a point distant r metres from a pole is:

1.	Magnetic field strength at a point distant r metres from a pole is:
A.	directly proportional to square of the r3
B.	directly proportional to square of the r2
C.	directly proportional to square of the r
D.	inversely proportional to square of the r
Answer» E.

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Magnetic field strength at a point distant r metres from a pole is:

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