Zero gauge wire has a diameter of 0.32in and can carry a sustained current of 150A safely. What is the magnetic field a distance 5cm from the center of a long straight segment of zero gauge wire carrying a current of 150A? This would be the field experienced by a bird sitting on the wire. Select One of the Following:

(a) 1.2 * 10-2T

(b) 1.9 * 10-3T

(c) 3.0 * 10-4T

(d) 6.0 * 10-4T

(e) 1.0 * 10-6T

Question

Shasta

Physics

21 March, 03:01

Zero gauge wire has a diameter of 0.32in and can carry a sustained current of 150A safely. What is the magnetic field a distance 5cm from the center of a long straight segment of zero gauge wire carrying a current of 150A? This would be the field experienced by a bird sitting on the wire. Select One of the Following:

(a) 1.2 * 10-2T

(b) 1.9 * 10-3T

(c) 3.0 * 10-4T

(d) 6.0 * 10-4T

(e) 1.0 * 10-6T

+2

Answers (1)

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Tiara · Answer 1

Answer: d) 6*10^-4 T

Explanation: In order to explain this problem we have to use the Ampere law to calculate the magnetic field, which is given by:

∫B*dl=μo*I then

B=μo*I / (2*π*r) where r and I are the distance to the wire and the current in the wire. μo is equal 4*π*10^-7 Wb/A*m

Finally, we have:

B=4*π*10^-7*150 / (2*π*0.05) = 6*10^-4 T