what is the magnitude of the resulting magnetic field and calculate the magnetic force acting on the 3 cm length of this wire.

Transcript: As shown in figure, two infinitively long parallel conducting wires are separated by 4 m. Wire 1 carries a current of 8 A out of the page and Wire 2 carries a current of 12 A into the page. 4 m L. a) In unit-vector notation, what is the magnitude of the resulting magnetic field at point p (16=41x10'T.m/A). 2 b) A third wire carrying a current of 6 A into the page is placed at point P. Calculate the magnetic force acting on the 3 cm length of this wire.