I have the answers below from book. I need to know why these answers apply. a. bulb brightness remains unchanged as potential difference across bulbs is unchanged. b. i. D=E=G=H

3. In the following questions, all bulbs and batteries are identical. a. Consider the circuit diagram to the right. The middle bulb suddenly burns out. When this happens, how does the brightness of the other bulbs change? Explain your reasoning. b. Identical bulbs are connected to identical batteries in the various circuits below. | i. Rank all the bulbs (A-H) in order of the voltage drop across them from least to greatest. Explain your reasoning. ii. Rank all the bulbs (A-H) in order of current flowing through them from K least to greatest. Explain your reasoning. iii. Rank all the batteries (I-L) in order of current flowing through them from least to greatest. Explain your reasoning