Consider the circuit. shown in the gure. that is made up of the 1 S2 resistor. the two rails. and the bar connecting the two rails. The bar can slide on the rails to the left or right. The separation between the rails is 8 Hi. There is a magnetic eld directed perpen- dicularly out of the page. An applied force of 6 N moves the bar to the left at a constant speed of 8 Ill/S. \"'hat is the magnitude of the magnetic eld that will result. in the bar moving at this constant speed of 8 m/s. Assume the bar and rails have negligible resistance and there is no friction between the bar and the rails. Answer in units of T