Final answer:
To calculate the electric potential at position (0,0) cm, we can calculate the electric potential at each point charge with respect to that point. To calculate the electric field experienced by the 100 nC point charge, we can use Coulomb's law to calculate the electric field due to each point charge.
Step-by-step explanation:
To calculate the work needed to make such a configuration, we can use the principle of work done against electric potential energy. The work done is equal to the change in the electric potential energy. The electric potential energy of a point charge q in the presence of an electric field E is given by U = qV, where V is the electric potential. Since the electric potential at any point due to a point charge is given by V = kq/r, where k is the Coulomb's constant and r is the distance between the point charge and the point where we want to find the electric potential, we can calculate the electric potential at each point charge with respect to point (0,0) cm. Adding them up will give us the electric potential at position (0,0) cm.
To calculate the magnitude and direction of the electric field experienced by the 100 nC point charge, we can use Coulomb's law. The electric field due to a point charge is given by E = kq/r^2, where E is the electric field, q is the charge, and r is the distance between the point charge and the point where we want to find the electric field. We can calculate the electric field at (0,0) cm by taking into account the electric field due to each point charge.