The Magnitude of a Magnetic Field a Distance 3

question 3

Multiple Choice

The magnitude of a magnetic field a distance 3.0 µm from a wire is 20.0 × 10^-4 T.How much current is flowing through the wire? Assume the wire is the only contributor to the magnetic field.

• A)30 mA
• B)188 mA
• C)19 mA
• D)377 mA