Rotation of electric dipole in an E Field
This physlet illustrates the motion of
a electric dipole in an external electric field.
We are seeing the dipole "from
the side", so there is the straight piece (like an imaginary bar
connecting them) and two "circles" on the end to indicate
the charges. The charges are opposite each other, and we set the
sign/magnitude of the left charge (when it starts) - the other will
automatically be set. If the charge is positive, it is green, negative
is red. The force vectors (from the electric field) are also shown.
You can change the strength of the
electric field, and the direction of the field (Positive E = UP,
Negative E = DOWN). You can change the magnitude/sign of the left
charge (other automatically set). You can also change the intial angle
- this is the angle that the dipole moment (vector from the negative
to the positive charge) makes with the electric field.