An 82.2 ohm and a 40.5 ohm resistor are connected in parallel. When this combination is connected across a battery, the current delivered by the battery is 0.304 Amp. When the 40.5 ohm resistor is disconnected, the current from the battery drops to 0.115 Amp.
(a) Calculate the emf.
(b) Calculate the internal resistance of the battery.