2313111 Fig. 27.18, R1 = 100 0., R2 = 50 , and the ideal batteries have emfs 51 = 6.0 V, 82 = 5.0 V, and 3 = 4.0 V. Find [a] the current in resistor 1, [b] the current in resistor 2, and (c) the potential difference between points a and b. R}