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  4. The electric potential at a distance of 3 m on the axis of a short dipole of dipole moment 4 × 10-12 coulomb-meter is

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Q. The electric potential at a distance of $3 \,m$ on the axis of a short dipole of dipole moment $4 \times 10^{-12}$ coulomb-meter is

Electrostatic Potential and Capacitance

Solution:

$V=\frac{9 \times 10^{9} \times 4 \times 10^{-12}}{9}$
$=4 \times 10^{-3} V =4 \,mV$