i) A circular coil with radius 20 cm is placed withit’s plane parallel and between two straight
wires P and Q. The coil carries current Icoil = 0.5A . Icoil is inclockwise direction when viewed
from left side. Wire P is located 40 cm to the left of a circularcoil and carries current Ip = 0.2A
while wire Q is located 80 cm to the right of the circular coil andcarries current IQ = 0.6A. Both
Ip and IQ are in the same directions into the paper. Determine theresultant of magnetic field at
the centre of a circular coil from the top view.
[7 marks]
ii) If the current in wire P is out of the page,determine the resultant of magnetic field at the centre
of a circular coil. (3marks)
