Find the number of electrons between two points kept at a potential difference of 20V if 40J of work is done.
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Answer:
the required answer is 1.25×10^19 electrons
question:
Find the number of electrons between two points kept at a potential difference of 20V if 40J of work is done.
given:
work ,w=40 joule
potential difference,v=20 V
to find:
number of electrons
FORMULAE:
- potential difference=work/ total charge
- total charge Q=ne
where n is number of electrons
e is the charge of electrons.
e=1.6×10^-19 joules
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