Three long parallel wires are 3.8 c m from one another. (Looking along them, the

Question

Three long parallel wires are 3.8 cm from one another. (Looking along them, they are at three corners of an equilateral triangle.) The current in each wire is 8.00A , but its direction in wire M is opposite to that in wires Nand P (see the figure (Figure 1) ).

A.) Determine the magnitude of the magnetic force per unit length on wire M due to the other two.

______________ N/m

B.) Determine the magnitude of the magnetic force per unit length on wire N due to the other two.

_______________ N/m

C.) Determine the magnitude of the magnetic force per unit length on wire P due to the other two.

__________________ N/m

Please provide a step by step solution showing how you got to it will rate with best answer if your answer is correct!

Explanation / Answer

A)

At M the magnitude of the other two wires is the same

F/L = ?o*I1*I2/2?L
= 4? x 10^-7 * 8.0 * 8.0 / 2*3.14*0.038
= 3.368 x10^-4N

So F/L total = 2*3.368x10^-4*cos(30) = 5.83x10^-4N

Direction 90o (degree)


B)

AT N magnitude will be = 3.368x10^-4N

but direction is 300o


C)

At P Magnitude is the same = 3.368x10^-4N

Direction 240o

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