An infinitely long straight wire and a single circular loop both carry the same…
PHYSICS · Single correct · AP · Physics C: Electricity and Magnetism · Magnetic Fields and Electromagnetism · Magnetic Fields and Electromagnetism
Problem
An infinitely long straight wire and a single circular loop both carry the same steady current I. Point P is 8cm from the straight wire and is also the centre of the loop of radius 8cm. Which statement correctly compares the magnitudes of the magnetic fields at P?
(a) Both fields have equal magnitude
(b) Field due to the loop is larger
(c) Field due to the straight wire is larger
(d) Field due to the loop is half that due to the wire