Calculate the net magnetic field at a point midway between the wires. Use the di

Question

Calculate the net magnetic field at a point midway between the wires. Use the direction into the page as the positive direction and out of the page as the negative direction.

Calculate the net magnetic field at point P1 - that is, d1 = 8.25 cm to the right of the wire on the right.

Calculate the net magnetic field at point P2 - that is, d2 = 18.0 cm to the left of the wire on the left.

*** i got the first answer to be 5.84E-5 T PLEASE help with second two questions

Explanation / Answer

magnetic field due to wireB=u0i/(2*pi*r)

part a)

when wires carry current in the opposite direction, then net magnetic field at mid point is zero

B=0

part b)

now r1=8.25

r2=8+8.25

B=u0i/(2*pi*r1)-u0i(2*pi*r2)

part c)

r2=18

r1=18+8

net B=u0i/(2*pi*r2)-u0i(2*pi*r1)

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