The thermodynamic work done by the system on the surrounding is considered as ____.

The thermodynamic work done by the system on the surrounding is considered as ____.

a. positive
b. negative
c. neutral
d. none of the above

Correct Answer : a. positive

Explanation :

The mechanical work is done by a force when it acts upon a body moving in the direction of the force. In thermodynamics, work transfer occurs between system and surrounding. Work is said to be done by a system when the energy is transferred from the system and it is responsible for or counted as some external mechanical change. When work is done by a system then it is taken as positive, and when work is done on the system by the surrounding then it is taken as negative. The symbol W is used for work transfer.