| List-I | List-II | ||
| (A) | Kinetic energy of Earth | (I) | $-\frac{GM_sM_e}{a}$ |
| (B) | Potential energy of Earth and Sun | (II) | $\frac{GM_sM_e}{2a}$ |
| (C) | Total energy of Earth and Sun | (III) | $\frac{GM_e}{ R}$ |
| (D) | Escape energy from surface of Earth per unit mass | (IV) | $\frac{GM_sM_e}{2a}$ |


In the first configuration (1) as shown in the figure, four identical charges \( q_0 \) are kept at the corners A, B, C and D of square of side length \( a \). In the second configuration (2), the same charges are shifted to mid points C, E, H, and F of the square. If \( K = \frac{1}{4\pi \epsilon_0} \), the difference between the potential energies of configuration (2) and (1) is given by: