Question

One Volt is equal to:
A. 1 Joule
B. 1 Newton/Coulomb
C. 1 Joule/ Coulomb
D. 1 Coulomb/Newton

Answer 1

First of all we should know about Electric Potential for solving this question, Hence an electric potential is the amount of work needed to move a unit positive charge from a reference point to a specific point inside the field without producing any acceleration. Typically, the reference point is Earth, although any point beyond the influence of the electric field charge can be used.

Complete step by step answer:
The standard metric unit on electric potential difference is the volt, abbreviated V and named in honor of Alessandro Volta. The SI derived unit used to measure electric potential at a given point, usually a point in an electric circuit. A voltage difference of one volt drives one ampere of current through a conductor that has a resistance of one ohm.

One joule of work is required to move an electric charge of one coulomb across a potential difference of one volt. One volt is equivalent to one joule per coulomb.
Thus, $\text{potential difference}= \,\dfrac{{\text{Work done}}}{{\text{Charge}}}$
Hence $1\,Volt\, = \,\dfrac{{1\,Joule}}{{1\,Coulomb}}$

Thus, the option C is the correct option.

Note: The concept of electric potential is used to express the effect of an electric field of a source in terms of the location within the electric field.The potential energy for a positive charge increases when it moves against an electric field and decreases when it moves with the electric field.