IP Consider the long, straight, current-carrying wires shown in the figure(Figur

Question

IP Consider the long, straight, current-carrying wires shown in the figure(Figure 1). One wire carries a current of 6.2 A in the positive y direction; the other wire carries a current of 4.5 A in the positive x direction. At which of the two points. A or B. do you expect the magnitude of the net magnetic field to be greater? Explain Essay answers are limited to about 500 words (3800 characters maximum, including spaces). Calculate the magnitude of the net magnetic field at points A and B. Express your answers using two significant figures separated by a comma.

Explanation / Answer

1) A)

B) at point A both wire prouce magnetic field out ot the page.

so, net magnetic field at point A, BA = sum of magnetic fields produced by two wires.

at point B, horizontal wire produce magnetic field out of the page and vertical wire produce magnetic field into the page.

so, at point B, BB = deiffrence of two magnetic fields produced by the tow wires.

C) let I1 = 6.2 A, I2 = 4.5 A

B_A = mue*I1/(2*pi*d) + mue*I2/(2*pi*d)

= mue*(I1+I2)/(2*pi*d)

= 4*pi*10^-7*(6.2+4.5)/(2*pi*0.16)

= 1.34*10^-5 T or 13.4 micro T

B_B = mue*I1/(2*pi*d) - mue*I2/(2*pi*d)

= mue*(I1-I2)/(2*pi*d)

= 4*pi*10^-7*(6.2-4.5)/(2*pi*0.16)

= 2.13*10^-6 T or 2.13 micro T

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