Final answer:
The direction of the resultant electric field at a dipole depends on the orientation of the dipole with respect to the external electric field.
Step-by-step explanation:
The direction of the resultant electric field at a dipole depends on the orientation of the dipole. A dipole consists of two opposite charges of equal magnitude separated by a distance. If the dipole is oriented in an external electric field, the dipole will tend to align itself with the electric field lines. This means that the direction of the resultant electric field at the dipole will be in the same direction as the electric field lines of the external field.
For example, if the external field lines are pointing from positive to negative charges, then the dipole will align itself so that the positive end points in the same direction as the field lines and the negative end points in the opposite direction.
Therefore, the direction of the resultant electric field at the dipole is determined by the orientation of the dipole with respect to the external electric field.
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