If Q, E and W denote respectively the heat added, change in internal energy and the work done in a closed cycle process, then

Question

If Q, E and W denote respectively the heat added, change in internal energy and the work done in a closed cycle process, then (A) E = 0 (B) Q = 0 (C) W = 0 (D) Q = W = 0

Tardigrade Admin · Accepted Answer

Internal energy depends only on the initial and final states of temperature and not on the path. In a cyclic process, as initial and final states are the same, the internal energy change is zero.
Hence

E

is

Δ U

, the internal energy change

Q. If Q,E and W denote respectively the heat added, change in internal energy and the work done in a closed cycle process, then

E = 0

Q = 0

W = 0

Q = W = 0

Internal energy depends only on the initial and final states of temperature and not on the path. In a cyclic process, as initial and final states are the same, the internal energy change is zero. Hence E is ΔU, the internal energy change

Q. If $Q, E$ and $W$ denote respectively the heat added, change in internal energy and the work done in a closed cycle process, then

Internal energy depends only on the initial and final states of temperature and not on the path. In a cyclic process, as initial and final states are the same, the internal energy change is zero.
Hence $E$ is $Δ U$ , the internal energy change