Change in internal energy, when 4 kJ of work is done on the system and 1 kJ of heat is givenout by the system is____

Change in internal energy, when 4 kJ of work is done on the system and

1.	Change in internal energy, when 4 kJ of work is done on the system and 1 kJ of heat is givenout by the system is____
Answer» `+1` KJ `-5` kJ `+3` kJ `-3` kJ Solution :`DELTAU=q+w` `DeltaU`=-1 kJ+ 4 kJ `DeltaU` =+3 kJ