millikan charge of electron

Small drops of oil formed by a sprayer are allowed to fall in between a positively charged upper metal plate and a negatively charged lower metal plate. The space between the two plates is irradiated with X-rays. This displaces some electrons of the air molecules, whi..

An electron is found to carry 1.6 x 10 - 1 9 coulomb of negative charge. Since this is the smallest negative charge carried by any particle, it is taken as unit negative charge..

The charge to mass ratio is found by measuring the deflection of a ray under the simultaneous influence of electrical and magnetic fields, applied perpendicularly to each other as well as to the direction of the flow of light. This is illustrated in the figure below:..

Electron Affinity - Electron affinity is the amount of energy released when an electron is added to an isolated gaseous ato..

In 1885, Sir William Crookes carried out a series of investigations into the behaviour of metals heated in a vacuum. The experiment of Crookes and others showed that a heated cathode produced a stream of radiation, which could cause gases at low pressure to glow and which, make other substanc..

Keeping in mind the structure of the atom, we can easily explain charging by rubbing. When glass rod is rubbed with silk, some of the electrons from the atoms on glass are transferred to silk. Because there is a deficiency of electrons in the glass, it becomes po..

Charging by Friction - Keeping in mind the structure of the atom, we can easily explain charging by rubbing. When glass rod is rubbed with silk, some of the electrons from the atoms on glass are transferred to silk. Because there is a deficiency of electrons ..

A charged plastic rod is brought close to the sphere. Free electrons in the sphere move away due to repulsion and piles up at the other end of the spher..

Charging by Induction - In the previous section we saw how a body is charged by friction . Let us now see how we can charge a metallic sphere by induction. Fig (a) shows an uncharged metallic sphere supported on an insulating rod. A charged plastic rod is bro..