Consider the circuit, shown in the figure, that is made up of the 1 2 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 m. K 1 0 - 8 m There is a magnetic field 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 m/s. What is the magnitude of the magnetic field 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