Answer:
6.4×10⁻¹⁹ C
Explanation:
From the question,
V = E×d.............. Equation 1
Where V = electric potential, E = Electric Field, d = distance moved by the particle.
Given: E = 75 N/C, d = 10 m.
Substitute into equation 1
V = 75×10 = 750 V.
Also Using,
W = qV.................. Equation 2
W = Work done by the particle when it moves, q = Particles charge
make q the subject of the equation,
q = W/V............ Equation 3
Given: W = 4.8×10⁻¹⁶ J, V = 750 V
Substitute into equation 3
q = 4.8×10⁻¹⁶/750
q = 6.4×10⁻¹⁹ C
