Physics - Magnetism Question with Solution | TestHub

In a neutral water molecule, there are 10 electrons and 10 protons. So, its dipole moment $p=q(2l)=10e(2l)$ Hence length of the dipole $=$ distance between centres of positive and negative charges $$2l=\frac{p}{10e}=\frac{6.4\times 10^{-30}}{10\times 1.6\times 10^{-19}}=4\times 10^{-12}\mathrm{m}$$