At a distance R from a current carrying wire, what is the direction of the magnetic field relative to the wire?
a) radially toward the wire
b) radially away from the wire
c) parallel to the wire
d) in the direction opposite to that of the current
e) in the direction that is perpendicular to both the wire and to the radial direction
Answer: e) in the direction that is perpendicular to both the wire and to the radial direction
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