A point charge of 2 nC is in kerosene. What is the field strength of this charge at a distance of 1 cm from it?

To find the field strength of the indicated charge, we will use the formula: E = k * q / (ε * R ^ 2).

Constants and variables: k – proportionality coefficient (k = 9 * 10 ^ 9 m / F); q is the amount of charge (q = 2 nC = 2 * 10 ^ -9 C); ε is the dielectric constant of kerosene (ε = 2.1); R is the distance to the charge (R = 1 cm = 0.01 m).

Let’s perform the calculation: E = k * q / (ε * R ^ 2) = 9 * 10 ^ 9 * 2 * 10 ^ -9 / (2.1 * 0.01 ^ 2) = 85.7 * 10 ^ 3 V / m = 85.7 kV / m.

Answer: The field strength is 85.7 kV / m.