The current in a straight wire will have a magnetic field around
it due to that current. The field strength:
Group of answer choices
a. Is directly proportional to the magnitude of the current and
to the distance from the wire
b. Is directly proportional to the magnitude of the current but
inversely proportional to the distance from the wire
c. Is inversely proportional to the magnitude of the current and
directly proportional to the distance from the wire
d. Is inversely proportional to the magnitude of the current and
inversely proportional to the distance from the wire