In the two circuits calculate the current flowing in the mesh! Values: For circuit a: U = 8V, U = 16V, U3 = 20V, R = 4.70, R = 5.60 For circuit b: U = 4V, U = 18V, U3 = 12V R = 5.6N, R = 4.7N, R3 = 1.2N U2 I U2 U 10 a) R1 R2 U3 U I b) R R2 R3 Qu U3