An electric dipole consists of charges `+ 2e and -2e` separated by 0.78mm. It is an electric field of strength `3.4xx10^(6) N//C`. Calculate the magnitude of the torque on the dipole when the dipole moment is (a) parallel to (b) perpendicular to, and (c) antiparallel to the electric field.

An electric dipole consists of charges `+ 2e and -2e` separated by 0.7

1.	An electric dipole consists of charges `+ 2e and -2e` separated by 0.78mm. It is an electric field of strength `3.4xx10^(6) N//C`. Calculate the magnitude of the torque on the dipole when the dipole moment is (a) parallel to (b) perpendicular to, and (c) antiparallel to the electric field.
Answer» Correct Answer - (a) Zero, (b) `8.5xx10^(-22) N m` (c ) Zero (a) `tau = pE sin theta = pE sin 0^(@) = 0` (b) `tau = pE sin theta` `= (2e) (0.78xx10^(-9)) 3.4xx10^(6) xx sin 90^(@)` `= 2xx1.6xx10^(-19) xx0.78xx3.4xx10^(-3)` `= 8.5xx10^(-22) Nm`

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An electric dipole consists of charges `+ 2e and -2e` separated by 0.78mm. It is an electric field of strength `3.4xx10^(6) N//C`. Calculate the magnitude of the torque on the dipole when the dipole moment is (a) parallel to (b) perpendicular to, and (c) antiparallel to the electric field.

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