1. Consider a closed loop of wire of two semi-circles of different radii (R and 2R) centered on a common point P and connected by straight wires with current i flowing as shown. Use an appropriate combination of the Biot-Savart Law dB = Hoi ds x f 47 r2 superposition, and symmetry to find an expression for B at point P as indicated. Note: You must correctly support each step and explain exactly what assumptions you are making.

1. Consider a closed loop of wire of two semi-circles of different radii (R and 2R) centered on a common point P and connected by straight wires with current i flowing as shown. Use an appropriate combination of the Biot-Savart Law dB = Hoi ds x f 47 r2 superposition, and symmetry to find an expression for B at point P as indicated. Note: You must correctly support each step and explain exactly what assumptions you are making.