Question
Physics Question on Electric charges and fields
The correct statement about electric dipole is
A
The total charge of an electric dipole is non-zero
B
The electric field of an electric dipole at far-off distances (r) varies as 1/r2
C
The dipole moment vector of an electric dipole points from −q to +q .
D
The electric dipole moment of CO2 molecule is non-zero electric field free region
Answer
The dipole moment vector of an electric dipole points from −q to +q .
Explanation
Solution
(a) The total charge of an electric dipole is zero
(b) The electric field of an electric dipole at far-off distances (r) varies as r31
(c) The dipole moment vector of an electric dipole points from −q to q
(d) The electric dipole moment of CO2 molecule is zero in electric field free region