An electrle dipole with dipole moment `4 xx 10^(-9)Cm` is aligned at `30^@` with the direction of a uniform clectric field of magnitude `5 xx 10^(4)NC^(-1)` Calculate the magnitude of the torque acting on the dipole.

Explanation

`p=4 xx 10^(-9)Cm, theta=30^(@), " "E=5 xx 10^(4) NC^(-1)`
`tau=p E sin theta=4 xx 10^(-9) xx 5 xx 10^(4) xx sin 30^(@)=4 xx 10^(-9) xx 5 xx 10^(4) xx 1/2=10 xx 10^(-5)Nm=10^(-4)Nm`