Two parallel wires are separated by a distance of 0. 010 m, and have currents ru

Question

Two parallel wires are separated by a distance of 0. 010 m, and have currents running in the same direction. The current in wire 1 is 8. 0 A, and that in wire 2 is 2. 0 A. Determine the magnitude and direction of the magnetic field of wire I in the location of wire 2. Determine the magnitude and direction of the force (due to the magnetic field of wire 1) on a 0. 50-m length of wire 2. Determine the magnitude and direction of the magnetic field of wire 2 in the location of wire 1. Determine the magnitude and direction of the force (due to the magnetic field of wire 2) on a 0. 50- m length of w ire 1. Are your results in agreement with Newton's 3rd law ("action-reaction")? Explain.

Explanation / Answer

A) B1 = mu_o*i1/(2*pi*r) = (2*10^-7*8)/(0.01) = 16*10^-5 T

B) F1 = mu_o*i1*i2*l/(2*pi*r) = (2*10^-7*8*2*0.5)/(0.01) = 16*10^-5 N

towards the wire 2

C)
B2 = mu_o*i2/(2*pi*r) = (2*10^-7*2)/0.01 =4*10^-5 T

D) F2 = mu_o*i1*i2*l/(2*pi*r) = (2*10^-7*8*2*0.5)/0.01 = 16*10^-5 T

towards the wire 1

e) yes .here Neton;s third law obeys

Action is F1 = -Reaction F2

F1 and F2 has same magnitudes ,but opposite in directions

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