Question

a beam of electrons passes through an electric field where the magnitude of the electric field strength is 3.00 * 10^3 newtons per coulomb. what is the magnitude of the electrostatic force exerted by the electric field on each electron in the beam?

Answer 1

Electric Field Strength E = Force F/ Charge q

E = F/q

Force , F =   E*q

But charge on an electron q = 1.6 * 10⁻¹⁹ C

E = 3 * 10³ N/C from the question.

Force F =  3* 10³ *   1.6 * 10⁻¹⁹

F = 4.8 * 10⁻¹⁶  N.

Electrostatic force F = 4.8 * 10⁻¹⁶  N