- A circular circuit of radius 30 cm is built to rotate about a pair of insulating posts. The circuit consists of a 100 volt battery, two 25 k9 resistors in parallel and one 75 k9 resistor in series. The circuit is exposed to an external uniform magnetic field of magnitude 0.75 Tesla and directed 20 degrees from the normal vector of the circuit and the axis of rotation. A) Calculate the magnitude and direction of the current in the circular loop (3 points) B) Calculate the net force (magnitude and direction) on the circuit (3 points) C) Calculate the total torque (magnitude and direction) on the circuit (5 points) D) Calculate the component of the torque on the circuit (magnitude and direction) at point A (exactly 1A of the way around the loop) (7 points) E) Calculate the component of the torque on the circuit (magnitude and direction) at point B (exactly 7/8 of the way around the loop) (7 points) Top View Side View