1. Find the current in, and the potential difference across, each resistor in the circuit shown below: The circuit is a simple parallel circuit with 2.0 ohms at the first resistor, 10.0 ohms at the second, and 20.0 ohms at the third The problem also gives you Emf which is 12.0 V and the internal resistance "r" which is 0 ohms 2. Voltage = Current*Resistance Possibly: Voltage = Emf - Current*Resistance Req (total resistance) = [(1/Resistance 1) + (1/Resistance 2) + (1/Resistance 3)]-1 3. I would attempt the problem but I've tried so many times and I'm just lost. I was absent the day this question was answered in class. I thought you were supposed to find the Req first then use the voltage given to find the current in the system, but thats not helping me at all. I don't understand Emf or internal resistance so I'm not sure of its purpose. I hope this helps. I'm on a laptop so I can't scan any images at all.