Question

A charge of 6.4 × 10–7 C experiences an electric force of 1.8 × 10–1 N. What is the electric field strength?

1.1 × 10–7 N/C
3.6 × 10–6 N/C
8.2 × 100 N/C
2.8 × 105 N/C

Answer 1

E = F/q = (1.8×10⁻¹ N)/(6.4×10⁻⁷ C) = (1.8/6.4)×10⁶ ≈ 0.28125×10⁶ = 2.8×10⁵ N/C.

Correct choice: 2.8 × 10⁵ N/C.