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The magnetic field vec(dB) due to a smal...

The magnetic field `vec(dB)` due to a small current element `vec(dl)` at a distance `vec(r)` and carrying current `'I'` is

A

`vec(dB)=(mu_(0))/(4pi)((vec(dl)xxvecr)/r)`

B

`vec(dB)=(mu_(0))/(4pi)((vec(dl)xxvecr)/r)`

C

`vec(dB)=(mu_(0))/(4pi)I^(2)((vec(dl)xxvecr)/(r^(2)))`

D

`vec(dB)=(mu_(0))/(4pi)I((vec(dl)xxvecr)/(r^(3)))`

Text Solution

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The correct Answer is:
D
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