Find the electric field strength at a point 5 cm away from a point charge 2.5 * 10 ^ -8 CL, embedded in paraffin.

Initial data: r (distance from the chiseled charge) = 5 cm = 0.05 m; q (value of a point charge) = 2.5 * 10 ^ -8 Cl.

Reference data: ε0 (electrical constant) = 8.85 * 10 ^ -12 F / m; ε (paraffin dielectric constant) = 2.

The electric field strength at a given point can be determined by the formula: E = q / (4Π * ε * ε0 * r ^ 2).

Let’s perform the calculation: 2.5 * 10 ^ -8 / (4 * 3.14 * 8.85 * 10 ^ -12 * 2 * 0.05 ^ 2) ≈ 45000 V / m = 45 kV / m.

Answer: The electric field strength is 45 kV / m.