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An electric dipole with dipole moment 4×...

An electric dipole with dipole moment 4×10 ^−9 C m is aligned at 30^∘ with the direction of a uniform electric field of magnitude 5×10 ^4 N/C. Calculate the magnitude of the torque acting on the dipole.

A

`1 xx 10^(-4)`Nm

B

`2 xx 10^(-4)` Nm

C

`4 xx 10^(-4)` Nm

D

`3 xx 10^(-4)` Nm

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