The circuit below has a 5 'y' battery and hue identical light bulbs with a resistance of 3 ohms each. There are two switches, A and B, located as shown. 1. Rank the bulbs' brightness when both switches are closed. If any bulbs don't light, or if multiple bulbs haye equal brightness, say so explicitly. Explain your reasoning. 2. Rank the bulbs' brightness when only switch A is open. If any bulbs don't light, or if multiple bulbs have equal brightness, say so explicitly. Explain your reasoning. 3. Rank the bulbs' brightness when only switch B is open. It any bulbs don't light, or if multiple bulbs have equal brightness, say so explicitly. Explain your reasoning. For the rest of the questions in this problem, assume both switches are closed. 4. Find the total effective resistance in the circuit. 5. Find the current the battery is supplying ill}. 5. Write out a loop rule for the top loop, going clockwise. Use this to nd the current through the bulbs in the middle branch {IE}