A battery with EMF = AVb and internal resistance r is attached to the circuit shown with resistors R1 and R2, and a switch. When the switch is open the current from the battery is IO and when the switch is closed the current from the battery is IC. What is the EMF? R1 = 14.3 Ohms, R2 = 23.9 Ohms, Io = 0.27 Amps, IC = 0.52 Amps Give your answer in Volts to at least three signicant digits. Grade Scope Solution: Your Grade Scope solution should show your work and provide an equation for AVb in terms of ONLY the variables R1, R2, IO, and IC. You may not need to use all these variables in your answer. Your Grade Scope solution should NOT INCLUDE THE NUMBERS given above. R1