Work Done Questions

This question contains Statement-1 and Statement-2. Of the four choices given after the statements,
choose the one that best describes the two statements.
Statement – 1: For a charged particle moving from point P to point Q, the net work done by an
electrostatic field on the particle is independent of the path connecting point P to point Q.
Statement-2: The net work done by a conservative force on an object moving along a closed loop is
zero

Two points $P$ and $Q$ are maintained at the potentials of $10\text{V}$ and $-4\text{V}$ respectively. The work done in moving $100$ electrons from $P$ to $Q$ is:

Directions: Question numbers 28, 29 and 30 are based on the following paragraph. Two moles of helium gas are taken over the cycle ABCDA, as shown in the P – T diagram.

Two moles of helium gas are taken over the cycle $ABCDA$, as shown in the $P–T$ diagram. Assuming the gas to be ideal, the work done on the gas in taking it from $A$ to $B$ is:

Referring to the $P–T$ diagram in the previous question, the work done on the gas in taking it from $D$ to $A$ is: