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 I1-8.30 A and I2-12.45 A. The distance separating the wires is 8.01 cm and point P is midway between the two wires. I, I2 What is the magnitude of the net magnetic field at point P due to the currents flowing in the two wires? 0.660T Submit Answer Incorrect. Tries 1/20 Previous Tries The direction of the net magnetic field at point P due to the currents flowing in the two wires is Submit Answer Tries 0/1

Explanation / Answer

I1 = 8.3 A

I2 = 12.45 A

d = 8.01 cm

B = uo*I1/(2pi*d/2) – (uo*I2)/(2pi*d/2) = (uo/pi*d)*(I1 – I2) = (4*10^-7/0.0801)*(8.3 – 12.45) = -2.07*10^-5 T (negative sign indicates the direction of net magnetic field is into the page)

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