Explanation: To solve this problem, we need to use the formula for the electric field strength between two charged objects:
E = k * (q1 * q2 / r^2)
where k is the electrostatic constant, q1 and q2 are the charges on the objects, and r is the distance between them. Since we have an infinite sheet of charge, we can treat it as a continuous distribution of charge. Therefore, we can integrate the electric field over a small area around each equipotential surface to find the average electric field strength:
Eavg = k * (σ / ε₀)
where σ is the surface charge density and ε₀ is the permittivity of free space. Substituting the given values, we get:
Eavg = k *