vector potential

[galipop]

Hi All,

I've just looked at an example for calculating the vector potential for a point in the vicinity of a long straight wire.

I've now got to calculate the vector potential for a point between 2 parallel straight wires carrying currents in opposite directions. How does the vector potential differ in this case.

By the way....study biot-savart is giving me a headache :)

[galipop]

does anyone wanna have a crack at it?

[pervect]

I would think you just add them together (with the appropriate sign).