Determine the electric field strength of a point charge 2.7 * 10 ^ -6Kl at a distance of 10cm. The charge is in the water.

Data: q (value of the considered point charge) = 2.7 * 10-6 C; r (given distance to a point charge) = 10 cm (0.1 m).
Constants: ε (relative dielectric constant of water) = 81; k (proportionality coefficient) = 9 * 109 N * m2 / Cl2.
The electric field strength for a given point charge is calculated by the formula: E = k * q / (ε * r ^ 2).
Calculation: E = 9 * 10 ^ 9 * 2.7 * 10 ^ -6 / (81 * 0.1 ^ 2) = 30,000 V / m = 30 kV / m.
Answer: The electric field strength is 30 kV / m.