The fig above shows a conductor PQ carrying a current I in the direction shown. At a particular position near the conductor is a compass needle K. Neglecting the earth’s magnetic field, the compass needle will
-
A.
settle in any direction -
B.
settle in a fixed direction only if the conductor PQ is a magnetic material -
C.
settle in a fixed direction WHETHER the conductor PQ is a magnetic material OR NOT -
D.
be stationary