Who represented the quantization of electric charge first and on what basis ?
A soap bubble is given a negative charge, then its radius
Why can we say that charge of any body is always an integral multiple of $'e'$ ?
Sure check for presence of electric charge is
How can you represent experimentally that $(i)$ there are two types of charges and $(ii)$ there is repulsion between two like charges and attraction between two unlike charges ?
A conductor has $14.4 \times {10^{ - 19}}coulombs$ positive charge. The conductor has(Charge on electron $ = 1.6 \times {10^{ - 19}}coulombs$)