Two long, straight parallel wires are 9.77cm apart and carry 3.45A currents in t

Question

Two long, straight parallel wires are 9.77cm apart and carry 3.45A currents in the same direction (see the figure (Figure 1) ). Again use the numbers given by me, not the ones in the figure.

--> Find the magnitude of the magnetic field at point P1, midway between the wires, and Find the magnitude of the magnetic field at point P2, 34.6cm to the right of P1.

Two long, straight parallel wires are 9.77cm apart and carry 3.45A currents in the same direction (see the figure (Figure 1) ). Again use the numbers given by me, not the ones in the figure. --> Find the magnitude of the magnetic field at point P1, midway between the wires, and Find the magnitude of the magnetic field at point P2, 34.6cm to the right of P1.

Explanation / Answer

Part A)

The B field midway between will cancel, so we will get zero.

Part B)

The formula that applies here is F = uI/2pir for each wire

F = (4pi X 10-7)(3.45)/(2pi)(.39485) + (4pi X 10-7)(3.45)/(2pi)(.29715)

F = 4.07 X 10-6 N

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