The displacement of a charge Q in the electric field `vecE = e_1hat i + e_2 hatj + e_3 hatk` is `vecr = ahati + bhat j` . The work done is .....
Options:
(a) `Q(e_1+e_2)sqrt(a^2+b^2)`
(b) `Q(sqrt(e_1^2+e_2^2))(a+b)`
(c) `Q(ae_1+be_2)`
(d) `Qsqrt((ae_1)^2+(be_2)^2)`