Imagine that you are an electron in the outer energy level of an atom, that is of phosphorous coating of a florencent light bulb. Decribe the way you will "travel" when the light is turned on.|||I(electron) get kicked out of my valence band and I am free from the attraction of the nucleus. Now, there is an field around me(due to applied voltage) which pushes me towards my goal. That goal, is the terminal having lesser potential.
Now, coming to travel, I will bounce off other atoms when trying to reach my goal. Due to this bounce, I will lose some energy but ultimately will complete my voyage.
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