When electricity flows through a coil of wire, what does the resultant magnetic field resemble?
AThe magnetic field of a bar magnet.
BThe magnetic field of a horseshoe magnet.
CThe magnetic field around a straight wire.
DThe magnetic field around a circular magnetic disc.
AThe magnetic field of a bar magnet.
BThe magnetic field of a horseshoe magnet.
CThe magnetic field around a straight wire.
DThe magnetic field around a circular magnetic disc.