A small glass bead has been charged to 8.0 nC? What is the strength of the electric field 2.0 cm from the center of the bead?

Question

Quizplus · Accepted Answer

The electric field (E) due to a point charge is given by the formula E = k * |q| / r², where k is Coulomb's constant (8.99 × 10^9 N·m²/C²), q is the charge (8.0 nC = 8.0 × 10^-9 C), and r is the distance (0.02 m). Plugging in these values gives E = (8.99 × 10^9) * (8.0 × 10^-9) / (0.02)² = 1.8 × 10^5 N/C.

A Small Glass Bead Has Been Charged to 8