A dipole of moment vecp is placed in a u...

A dipole of moment `vecp` is placed in a uniform electric field `vecE`. The force on the dipole is `vecF` and the torque is `vec(tau)`

`vectau=vecp.vecE`

`vectau=vecpxxvecE`

`vectau=vecp+vecE`

`vectau=vecp-vecE`

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