Class test-4 EEE 209 (Electromagnetic) Time: 15 Minutes Submit your scan copy of hand written answer script in pdf format. File name will be your student Id. 1. Two Semicircular conductors of radii a and b are joined by straight segments to form a complete loop. If the current in the loop is I, determine the magnetic flux density at any point on the axis of the loop. 2. A d-c surface current with density J=axJs0 flows in an infinite conducting sheet coinciding with the xy-plane. a) Determine the magnetic flux density B at (0, 0, z) and at (0, 0, -z). b) Find the vector magnetic potential A at (0, 0, z) from B. Choose the reference zero potential at an arbitrary point z = z0