I\'m having trouble with how to setup this problem: How much work is done (by a

Question

I'm having trouble with how to setup this problem:
How much work is done (by a battery, generator, or some othersource of potential difference) in moving Avogadro's number ofelectrons from an initial point where the electric potential is+14.0 V to apoint where the potential is -4.00 V? (Thepotential in each case is measured relative to a common referencepoint.)

I'm having trouble with how to setup this problem:
How much work is done (by a battery, generator, or some othersource of potential difference) in moving Avogadro's number ofelectrons from an initial point where the electric potential is+14.0 V to apoint where the potential is -4.00 V? (Thepotential in each case is measured relative to a common referencepoint.)

Explanation / Answer

Potential difference dV = 14 - ( -4 ) = 18 V No.of electrons N = 6.023 * 10 ^ 23 So, charge of N electrons Q = N e where e = charge of electron = 1.6 * 10 ^ -19C So, charge Q = 9.6368 * 10 ^ 4 C work done   W = dV * Q substitue values we get   W =   173.4624 *10 ^ 4 J                                          = 1.734624 MJ                                

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