Answer:
0,33 Volt
Step-by-step explanation:
v = 340 000 m/s - Initial electron speed
m = 9.1·10⁻³¹ kg - Mass of an electron
W = m·v² / 2 - Initial kinetic energy of an electron
W = 9.1·10⁻³¹·(340 000)² /2 ≈ 5.26 · 10⁻²⁰ J (1)
Q = 1.6·10⁻¹⁹ C - Electron charge modulus
The work of the electric field:
A = Q·V (2)
Equate (2) and (1):
Q·V = W
V - Electric field potential difference
V = W / Q = 5.26 · 10⁻²⁰ / 1.6·10⁻¹⁹ ≈ 0,33 Volt