To reduce the internal energy U of an ideal gas you need the gas to lose heat and/or do work.
Current = charge/time = 240/2x120 =1A.
Current flowing is 1 ampere.
I think 1 and 3 is absolutely right but im not sure about number 2.
I think the answer is 4 all of the above because as the vibration decrease automatically the kinetic energy decrease and the temperature is decrease because when the vibration of molecules decrease thats mean the substances is slightly become a solid and you can get a solid cube of liquid if you freeze them
