(a) Calculate the potential at a point P due to a charge of `4xx10^(-7) C` located 9 cm away.
(b) Hence obtain the work done in bringing a charge of `2xx10^(-9) C` from infinity to the point P. Does the answer depend on the path along which the charge is brought ?

Explanation

To solve the given problem, we will break it down into two parts as specified in the question.

### Part (a): Calculate the potential at point P

1. **Identify the formula for electric potential (V)**:
The electric potential \( V \) at a distance \( R \) from a point charge \( Q \) is given by the formula:
\[
V = \frac{1}{4 \pi \epsilon_0} \frac{Q}{R}
...