Physics 202 & 214 Quiz # 26 3-24-08

Phy 202 Quiz 26

A current of 17.0 mA is maintained in a single circular loop with a circumference of 2.00 m. A magnetic field of 0.800 T is directed parallel to the plane of the loop. What is the magnitude of the torque exerted by the magnetic field on the loop?

Phy 214 Quiz 26

Use the Biot-Savart Law to calculate the magnitude and direction of the magnetic field at P located at the center of concentric semicircles of radii a = 5 m and b = 8 m when a current of I = 3 mA is maintained in the circuit.