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The magnetic field due to a current in a...

The magnetic field due to a current in a straight wire segment of length L at a point on its perpendicular bisector at a distance `r(rgtgtL)`

A

decreases as `(1)/(r)`

B

decreases as `(1)/(r^(2))`

C

decreases as `(1)/(r^(3))`

D

approaches a finite limit as `rtooo`

Text Solution

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According to Biot-Savart law, `dBprop(1)/(r^2)`
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