Amy F. Fowler and Leonard Hofstadter are conducting another experiment regarding an electronic circuit. They consider a combination of five resistors shown in the following circuit diagram. In this diagram, each rectangular box symbolizes a resistor. The terminal voltage of the battery is 12 V, and there is no internal resistance for this battery. The resistances of the five resistors are: R = 2 0, R = 2 0, R =1Q, R, =6 0 and R = 3 0, respectively. The electric currents are unknown because they do not have any ammeter to measure these currents. Answer the following questions from Problem 9.1 to Problem 9.3. R4 Ri R2 RE +12V Problem 9.1: (Fill in the one blank in below.) Amy is trying to calculate the equivalent resistance of this combination of the five resistors R , R , R. R, R. What value will she get? The equivalent resistance of this combination of the five resistors is ( 0).Problem 9.2: (Fill in the one blank in below.) Leonard is trying to calculate the electric current that flows through the resistor R. What value will he get? The electric current flowing through the resistor R, is (A). Problem 9.3: (Fill in the one blank in below.) Amy is then trying to calculate the electric current that flows through the resistor R, . What value will she get? The electric current flowing through the resistor R, is (A)