An electrical potential of one volt will cause how much work to be done by one coulomb of current?

An electrical potential of one volt indicates that one joule of work is done when one coulomb of charge moves through a potential difference of one volt. This relationship is rooted in the fundamental definition of voltage (or electric potential). Specifically, voltage is defined as the amount of electric potential energy per unit charge.

Therefore, if one coulomb of charge is moved through a potential difference of one volt, it gains an energy of one joule. The equation that embodies this concept is:

[

\text{Work (in joules)} = \text{Voltage (in volts)} \times \text{Charge (in coulombs)}

]

In this case, substituting in the values gives:

[

1 \text{ joule} = 1 \text{ volt} \times 1 \text{ coulomb}

]

This relationship reinforces that whenever 1 volt drives 1 coulomb of charge, the work done is precisely 1 joule. Thus, the answer is firmly established as one joule.