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

univerkov | May 2, 2021 | education

Given: q (charge) = 2.7 * 10 ^ -6 C; r (distance to the specified charge) = 10 cm = 0.1 m; k – coefficient of proportionality (k = 9 * 10 ^ 9 m / F); ε is the dielectric constant of water (ε = 81).

Field strength: E = k * q / (ε * r ^ 2) = 9 * 10 ^ 9 * 2.7 * 10 ^ -6 / (81 * 0.1 ^ 2) = 30 kV / m (30 * 10 ^ 3 V / m).

Answer: The field strength of the indicated point charge is 30 kV / m.

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