question_answer

Can a body have a charge of \[\mathbf{0}\mathbf{.8 \times  1}{{\mathbf{0}}^{\mathbf{-19}}}\mathbf{~~C}\] Justify your answer by comment?     

Answer:

                The charge on any body is always an integral multiple of e. Here \[n=\frac{q}{e}=\frac{0.8\times {{10}^{-19}}C}{1.6\times {{10}^{-19}}C}=0.5\] This is not an integer. So a body cannot have a charge \[0.8\times {{10}^{-19}}C\].