Question

How much energy is stored if 6.24 x 1018 electrons are stored in 4 volts?

Answer 1

the energy stored when 6.24 ×10^18 electrons are stored in 4 volts =4 joules

Answer 2

Concept:

One electron volt: An electron obtains one electron volt of energy when it crosses a one-volt potential difference.

Given:

Electrons stored in $4$ volts is $6.24\times10^{18}$.

Find:

The total energy stored in $4$ volts.

Solution:

$1eV$ is the energy that an electron obtains when it travels through a potential difference.

The electron stored is $6.24\times10^{18}$.

Now, $1eV=1.6021\times10^{-19}J$

Therefore,

$4eV=4\times(1.6021\times10^{-19})\times(6.24\times10^{18})\\4eV=40(10^{-1})J\\4eV=4J$

The energy stored if $6.24\times10^{18}$ are stored in $4V$ is $4$ joules.

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