APFIVE Magnetic Field of a Solenoid and Wire
A long solenoid has a turn density of 500 turns per meter and carries a current of 3.0 A. A long, straight wire carrying a current of 6.0 A is positioned along the central axis of the solenoid. What is the magnitude of the net magnetic field at a point 2.0 cm from the central axis?
A
7.5 × 10^-4 T
B
1.88 × 10^-3 T
C
3.8 × 10^-4 T
D
1.9 × 10^-4 T
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