The electric dipole moment of an electron and proton `4.3 nm `apart is

Options

A. `6.88xx10 ^(-28) Cm`
B. ` 2.56 xx 10^(-29) C^(2) m^(-1) `
C. ` 3.72 xx 10 ^(-14) C m^(-1) `
D. ` 1.1 xx 10 ^(-46) C^(2) m `

Answer

A

Explanation

Here `|q_1|=|q_2| =1.6 xx 10 ^(-19) C ` and distance between two charges is `2a =4.3 nm =4.3 xx 10^(-9) m `
` therefore ` Dipole moment ` p=1.6 xx10 ^(-19) xx 4.3 xx10 ^(-9) C m =6.88 xx10 ^(-28) C m. `