# Determine the strength of the electrostatic field created by a point positive charge of 27 nC

June 26, 2021 | education

| **Determine the strength of the electrostatic field created by a point positive charge of 27 nC at a distance of 9 cm from it.**

The strength of the electrostatic field is calculated by the formula:

E = q / (4 * Π * ε0 * r ^ 2), where q is the value of the point charge (q = 27 nC = 27 * 10 ^ -9 C), ε0 is a constant value (ε0 = 8.85 * 10 ^ -12 F / m), r is the distance from the point charge to the point under study (r = 9 cm = 0.09 m).

Let’s calculate the strength of the electrostatic field:

E = q / (4 * Π * ε0 * r ^ 2) = 27 * 10 ^ -9 / (4 * 3.14 * 8.85 * 10 ^ -12 * 0.09 ^ 2) ≈ 30,000 V = 30 kV.

Answer: The strength of the electrostatic field is 30 kV.

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