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

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

A

`bar(dB) = mu_0/(4π) i([bar(dl)×bar(r)]/r)`

B

`bar(dB) = mu_0/(4π) i^2([bar(dl)×bar(r)]/r)`

C

`bar(dB) = mu_0/(4π) i([bar(dl)×bar(r)]/r^2)`

D

`bar(dB) = mu_0/(4π) i([bar(dl)×bar(r)]/r^3)`

Text Solution

Verified by Experts

The correct Answer is:
D
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