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Charge Q is given by the displacement r=...

Charge Q is given by the displacement `r=a hati+bhat j` in an electrif field `E=E_(1)hati+E_(2)hatj`. The work done is

A

`Q(E_(1)a+E_(2))`

B

`Qsqrt((E_(1)a)^(2)+(E_(2))^(2))`

C

`Q(E_(1)+E_(2))`

D

`Qsqrt((E_(1)^(2)+E_(2)^(2)))sqrt(a^(2)+1)`

Text Solution

Verified by Experts

The correct Answer is:
A
`F=qE,W=vecF.vecr`
`W=q(E_(1)i+E_(2)j).(ai+j)`
`W=q(E_(1)a+E_(2))`
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