Two charges, one \( +5\,\mu\mathrm{C} \) and another \( -5\,\mu\mathrm{C} \), are placed \( 1\,\mathrm{mm} \) apart. The dipole moment of the dipole formed by them is:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → \( 5.0\times10^{-9}\,\mathrm{C\,m} \)
The electric dipole moment is the product of either charge and the separation between the charges.
\( q = 5\,\mu\mathrm{C} = 5\times10^{-6}\,\mathrm{C} \)
\( d = 1\,\mathrm{mm} = 1\times10^{-3}\,\mathrm{m} \)
\( p = qd \)
\( p = (5\times10^{-6}\,\mathrm{C})(1\times10^{-3}\,\mathrm{m}) = 5.0\times10^{-9}\,\mathrm{C\,m} \)