Multiple Choice
Three very long,straight,parallel wires each carry currents of 4.0 A,directed out of the page as shown in the figure.These wires pass through the vertices of a right isosceles triangle as shown.Assume that all the quantities shown in the figure are accurate to two significant figures.What is the magnitude of the magnetic field at point P at the midpoint of the hypotenuse of the triangle? (μ0 = 4π × 10-7 T ∙ m/A) 
A) 4.4 µT
B) 18 µT
C) 57 µT
D) 130 µT
E) 1.8 µT
Correct Answer:
Verified
Correct Answer:
Verified
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