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The magnetic field at the origin due to ...

The magnetic field at the origin due to a current element I `(vec dl ) placed at a positon (vec r) is`

A

`(((mu_0 i)/(4pi))` `(vec (dl) xx vec (r))/r^3)`

B

`(-((mu_0)i/(4 pi) (vec(r) xx vec(dl) / r^3)))`

C

`((mu_0)i/(4 pi) (vec(r) xx vec(dl) / r^3))`

D

`(-((mu_0)i/(4pi)(vec (dl) xx vec (r))/r^3))`

Text Solution

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The correct Answer is:
C, D
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