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The magnetic field dvecB due to a small ...

The magnetic field `dvecB` due to a small current element `dvecl` at a distance `vecr` and element carrying current `i` is,

A

`d vec B = mu_(0)/(4 pi) * (I vec (dl) xx vec r )/r `

B

`d vec B = mu_(0)/(4 pi) * (I vec (dl) xx vec r)/r^(2)`

C

`d vec B = mu_(0)/(4 pi) * (I vec (dl) xx vec r)/r^(3)`

D

`d vecB = mu_(0)/(4 pi) * (I vec (dl) xx vec r)/r^(4)`

Text Solution

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The correct Answer is:
c
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