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The displacement of a chrage Q in the el...

The displacement of a chrage `Q` in the electric field
`E = e_(1)hati + e_(2)hatj + e_(3)hatk " is " vecr = ahati + bhatj`. The work done is

A

`Q(ae_(1)+be_(2))`

B

`Qsqrt((ae_(1))^(2)+(be_(2))^(2))`

C

`Q(e_(1)+e_(2))sqrt(a^(2)+b^(2))`

D

`Q(e_(1)^(2)+e_(2)^(2))(a+b)`

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