Question

A short electric dipole bas a dipole moment of 16 x 10^-9 C m. The electric potential due to the dipole at a point at a distance of 0.6 m from the centre of the dipole, situated on a line making an angle of 60° with the dipole axis is: ____________. `(1/(4piepsilon_0) = 9 xx 10^9  "Nm"^2// "C"^2)`

Options

• 200 V

• 400 V

• zero

• 50 V

Answer 1

A short electric dipole bas a dipole moment of 16 x 10^-9 C m. The electric potential due to the dipole at a point at a distance of 0.6 m from the centre of the dipole, situated on a line making an angle of 60° with the dipole axis is: 200 V.

Explanation:

Electric potential,

`"V" = 1/(4 piepsilon_0) ("p cos" theta)/"r"^2`

`= 9 xx 10^9 xx (16 xx 10^-9 xx cos 60°)/(0.6)^2`

`= 9 xx 10^9 xx (16 xx 10^-9 xx 1)/((0.6)^2 xx 2)`

`= 200  "V"`