2.) We consider a circuit that consists of one battery with unknown voltage ('EMF') 5, two unknown resistors R1 and R2, and the known resistor R3 = 56 Q. The currents through the three resistors (II, 12, and I3) are not known. The power dissipated in the three resistors are P1 = 27 W, P2 = 51 W, and P3 = 42 W, respectively. a) Find the ratio I2/I3! b) Find the resistor R21 0) Find the resistor R1