Question

A gas expands $0.25m^{3}$ at constant pressure $10^{3}N/m^{2}$, the work done is

• A. 2.5 ergs
• B. 250 J
• C. 250 W
• D. 250 N

Answer 1

Answer: (B)

250 J

Answer 2

$\Delta W = P\Delta V = 10^{3} \times 0.25 = 250\mspace{6mu} J$