Please help me with #1 and #2. I am not getting it right. Please help me. 001 (p

Question

Please help me with #1 and #2. I am not getting it right. Please help me.

001 (part 1 of 2) The set up is shown in the figure, where 18 A is flowing in the wire segment, bar AB= bar CD=42 m, and the wire segment arc has a radius 32 m subtending an angle of 90degree. The permeability of free space 1.25664 x 10^-6 T . m/A Find the magnitude of the magnetic field at O due to the current, segment ABCD. Answer in units of T 002 (part 2 of 2) Find the magnitude of the magnetic field at O due to the current segment bar AB alone. Answer in units of T

Explanation / Answer

B_ab = 0

B_cd = 0

B_bc = (uo*i*theta)/(4*pi*R)

theta = pi/2 = 3.14/2 = 1.57 rad

B_bc = (1.25664e-6*18*1.57)/(4*3.14*0.32)

B_bc = 8.83575e-6 T

B_abcd = 0 8.83575e-6 + 0 = 8.83575e-6 T

part 2

B_ab = 0 T

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