The two very long parallel wires shown in the figure below carry currents in the

Question

The two very long parallel wires shown in the figure below carry currents in the same direction of I1-7.90 A and I2-3.95 A. The distance separating the wires is 5.79 cm and point P is midway between the two wires. 2 What is the magnitude of the net magnetic field at point P due to the currents flowing in the two wires? (in T) D: 1.30x1 E: 1.88 10% F 2.73x1OS G: 3.96 10'5 H: 5.74 10'5 CA: 4.26x106B: 6.17x10 6C: 8.95106 OD: 1.30x10-5E: 1.88x10- OF: 2.73x105G: 3.96x10-H 5.74x10-5 Submit Answer Tries 0/20 The direction of the net magnetic field at point P due to the currents flowing in the two wires is A: out of the page OB: into the page Submit Answer Tries 0/20

Explanation / Answer

magnetic field due to each wire is B = uo I/2piR

here Bnet = B1 + B2

Bnet = uoI1/2pid - uo I2/2pid

Bnet = uo(I1+I2)/2pid

here d = 0.0579/2 = 0.02895 m

Bnet = 4*3.14*10^-7 *(7.9 - 3.95)/(2*3.14 * 0.02895)

Bnet = 2.73 *10^-5 Tesla  

option F

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direction will be radially out of the paper at point P

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