At some point of the field, a force of 3N acts on the charge q = 10 ^ -5 CL.

At some point of the field, a force of 3N acts on the charge q = 10 ^ -5 CL. What force will act on this charge if the field strength decreases 3 times.

Task data: q (indicated charge) = 10 ^ -5 C; Fн (initial strength) = 3 N; k (decrease in field strength) = 3 p.

1) Initial field strength: En = Fn / q = 3/10 ^ -5 = 3 * 10 ^ 5 V / m.

2) Considered field strength: Ek = En / 3 = 3 * 10 ^ 5/3 = 10 ^ 5 V / m.

3) The sought force: Fk = Ek * q = 10 ^ 5 * 10 ^ -5 = 1 N.

Answer: After decreasing the field strength, a force of 1 N. will act on the charge.