Auniform electric field of magnitude 365 n/c pointing in the positive x-direction acts on an electron, which is initially at rest. the electron has moved 3.00 cm. (a) what is the work done by the field on the electron?

Explanation:

given E= 365 N/C in positive x-direction

electron initially at rest q=  1.6C

force experienced by the electron F= Eq

⇒F= 365

=584

Distance traveled by electron S = 3 cm

now work done W= FS=584

W= 1752 Joules

Work done= 1.752 Joules

force required to detach it is given by

charges are taken to be fundamental charge

now we have

so above is the minimum distance at which it will detach