Prob. 7 Two long, straight, parallel wires, 4.0 cm apart carry equal currents /1 = l2 =3.0A as shown. 12 [c] What is the magnitude (in units of uT) of the net B-field at point P? Point P is 2.0cm away from O along the y-axis. (Example: If your answer is 2.34x10-6T =2.34µT, enter your answer as 2.34.)

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Prob. 7 Two long, straight, parallel wires, 4.0 cm apart carry equal currents 14 = 12 =3.0A as
shown.
12
[c] What is the magnitude (in units of uT) of the net B-field at point P? Point P is 2.0cm away
from O along the y-axis. (Example: If your answer is 2.34x10-6T =2.34µT, enter your
answer as 2.34.)
Transcribed Image Text:Prob. 7 Two long, straight, parallel wires, 4.0 cm apart carry equal currents 14 = 12 =3.0A as shown. 12 [c] What is the magnitude (in units of uT) of the net B-field at point P? Point P is 2.0cm away from O along the y-axis. (Example: If your answer is 2.34x10-6T =2.34µT, enter your answer as 2.34.)
Expert Solution
Step 1: Ampere's Law

Ampere's Law says that for a closed loop, Line integral of Magnetic field around the current carrying wire is proportional to the current enclosed by the loop. It relates magnetism with electricity. It is a simpler alternative to biot-savart law. It is can be shown mathematically as,

B.dl = μo Ienc

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