electric dipole Flashcards
1
Q
what is electric dipole even
A
A combination of two charges +q and −q separated
by a small distance d constitutes an electric dipole. The electric dipole moment of this combination is defined as a vector
p→= qd→ (arrows on top to show vector)
where d→
is the vector joining the negative charge to
the positive charge. The line along the direction of the
dipole moment is called the axis of the dipole.
2
Q
transverse & radial electric field due to dipole
net field also
A
Eradial=
2Kpsintheta/r^3
Etheta=
Kpcostheta/r^3
Enet= Kp[√(1 + 3sinθ²)]/r^3
3
Q
TORQUE ON AN ELECTRIC DIPOLE
PLACED IN AN ELECTRIC FIELD
A
= q AB→× E→
= p→× E→
