Question

A system absorbs 600 J of energy and does work equivalent to 400 J of energy. The internal energy change is

• A. 1000 J
• B. 200 J
• C. 600 J
• D. 300 J

Answer 1

The correct option is B 200 J

$\begin{array}{c}Weknowthat,\\ \Delta E=Q+W\\ =600+\left(-400\right)\\ =200J\end{array}$

Hence,

Option $B$ is correct.