Answer: 2.963*10⁶ m/s
Explanation:
Work done = kinetic energy
K.E = eV
½mv² = eV
v² = 2eV / m.
Mass of an electron = 9.11*10-³¹kg
Energy of an electron = 1.60*10-¹⁹J
v² = (2 * 25 * 1.60*10-¹⁹) / 9.11 * 10‐³¹
v = 2.96*10⁶m/s
Note : you'll have to take the square root of velocity (v)
