Two 100 Turn Coils of Wire with a Diameter of 1.0

question 44

Multiple Choice

Two 100 turn coils of wire with a diameter of 1.0 m are placed a distance of 0.25 m apart as shown in the figure.A current of 3.0 A is in the wires of both coils and the direction of the current is clockwise (CW) for both coils when viewed from one end.What is the magnitude of the magnetic field in the center between the two coils?

• A)0 T
• B)1.9 * 10^-4 T
• C)3.4 * 10^-4 T
• D)6.9 * 10^-4 T
• E)7.5 * 10^-4 T