Question

Under the action of a given coulombic force acceleration of an electron

Answer 1

you didn't mention about electric field .

let us consider electric field is E.

so, force acting on electron due to presence of electric field, F = qE

where q is charge on electron.i.e., q = 1.6 × 10^-19C

from Newton's 2nd law,

F = ma

so, qE = ma

a = qE/m

where m is mass of electron . i.e., m = 9.1 × 10^-31 Kg

so, a = (1.6 × 10^-19)E/(9.1 × 10^-31)

= (1.6/9.1) × 10¹²E

= 1.758 × 10¹¹E

hence, answer is 1.758 × 10¹¹E