What is the relation that links .m.f., current and electrons flow?
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An uncharged conducting dome is separated from the ground using an insulator.
Near the ground negative charges (electrons) are sprayed onto a conveyor belt made of an insulator.
The electrons travel towards the conducting dome.
The electrons leave the belt and move onto the dome which now has a net negative charge.
The potential of the dome is now less than that of the ground and an electric field exists in the region between the dome and the ground.
The direction of the electric field is from the ground towards the dome.
As more and more electrons are collected by the dome the electric field gets stronger and stronger and the potential difference between the dome increases.
To get the electrons to move from the ground to the dome (negative potential relative to the ground) requires work to be done and that work is done by whatever is making belt move.
Near the ground negative charges (electrons) are sprayed onto a conveyor belt made of an insulator.
The electrons travel towards the conducting dome.
The electrons leave the belt and move onto the dome which now has a net negative charge.
The potential of the dome is now less than that of the ground and an electric field exists in the region between the dome and the ground.
The direction of the electric field is from the ground towards the dome.
As more and more electrons are collected by the dome the electric field gets stronger and stronger and the potential difference between the dome increases.
To get the electrons to move from the ground to the dome (negative potential relative to the ground) requires work to be done and that work is done by whatever is making belt move.
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