[amp_mcq option1=”one joule/coulomb” option2=”one coulomb/joule” option3=”one coulomb” option4=”one joule” correct=”option1″]
The correct answer is A. one joule/coulomb.
One volt is the potential difference that will cause a current of one ampere to flow through a resistance of one ohm. In other words, one volt is equal to one joule of energy per coulomb of charge.
Option B is incorrect because one coulomb per joule is equal to one ohm.
Option C is incorrect because one coulomb is a unit of charge, not of potential difference.
Option D is incorrect because one joule is a unit of energy, not of potential difference.