The electric potential at the point is 1.8V
Electric potential is the electric potential energy per unit charge at a point in space. It is a scalar quantity measured in volts.
A positive charge moves from higher to lower potential, while a negative charge moves in the opposite direction.
It is expressed as
V = kq/r
where K = 9 × 10⁹
q = 1.2nC = 1.2× 10⁻⁹
r = 6m
therefore
V = 9 × 10⁹ × 1.2× 10⁻⁹/6
V = 1.8V
Therefore, the electric potential at the point is 1.8V