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An electric dipole of moment 'p' is plac...

An electric dipole of moment 'p' is placed an electric of intensity `E`. The dipole acquires a position, such that the axis of the dipole makes an angle `theta ' with the direction of the field.assuming that the potential energy of the dipole to be zero when 'theta ' =90 the torque and the potential energy of the dipole will respectively be

A

`pEsin theta, - 2pEcos theta`

B

`pEsin theta, 2pEcos theta`

C

`pEsin theta , pEcos theta`

D

`pEsin theta, -pEcos theta`

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