An electron is accelerated from rest through a potential difference of 70kV in a vacuum. Calculate the maximum speed acquired by the electron (electronic charge = -1.6 x 10^-19; mass of an electron = 9.1 x 10^-31kg)

• A.3.00 x 10⁸ms^-1
• B.2.46 x 10⁸ms^-1
• C.1.57 x 10⁸ms^-1
• D.1.32 x 10⁸ms^-1
• E.1.11 x 10⁸ms^-1