Question

An infinite straight wire is carrying a current. What is true about the magnetic field lines around the wire?

• A. The field is uniform.
• B. The field increases in strength as the distance from the wire increases.
• C. The field lines are directed parallel to the wire, but opposite to the direction of the current.
• D. The field lines are directed radially outward from the wire.
• E. The field lines form circles about the wire.

Answer 1

The correct option is E The field lines form circles about the wire.

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