If you have a set of christmas lights that is on a series circuit, predict what would happen if the series circuit were cut off in the middle. how would this differ from what would happen with a parallel circuit?

Aheat engine that operates on a carnot cycle has an efficiency of 0.420 when its low-temperature reservoir is at 10 ∘c.part aby how many degrees celsius must you increase the temperature of the high-temperature reservoir to increase the efficiency to 0.600 if you continue to use the same low-temperature reservoir?