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The torque tau acting on an electric dip...

The torque `tau` acting on an electric dipole of dipole momtn `vec(p)`in an electric field `vec( E )` is

A

`vec(tau)= vec(p).vec(E)`

B

`vec(tau)= vec(p)xxvec(E)`

C

`vec(tau) = p. vec(E )`

D

`vec(tau) = vec(p) E`

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