Potential and Potential Energy Relation

Q. A charge $Q$ is placed in front of a conducting sphere at a distance $2r$ from center of sphere as shown in the figure. Potential at point $P$ on the surface of sphere due to induced charges is

1. $\frac{kQ}{6r}$
2. $\frac{kQ}{2r}$
3. $\frac{kQ}{3r}$
4. \N

Q. Any negative charge moves frompotential to potential.

1. higher
2. lower
3. zero
4. infinite