Question

1 volt is equal to
A.) ${\text{1 Joule}}$
B.) $\dfrac{{{\text{1 Joule}}}}{{{\text{1 Coulomb}}}}$
C.) $\dfrac{{{\text{1 Joule}}}}{{{\text{1 meter}}}}$
D.) $\dfrac{{{\text{1 Newton}}}}{{{\text{1 Coulomb}}}}$

Answer 1

Hint: Before defining the value of volt we should know the purpose for which the unit is used. Knowing the purpose will help us to know the various quantities that are associated with volt and accordingly we can define volt.

Step by step answer:
Volt is defined as the electrical unit which is used to express voltage or potential difference. The symbol of volt is V. 1 volt is defined as the energy consumption of 1 joule per electric charge of one coulomb that is $\dfrac{{{\text{1 Joule}}}}{{{\text{1 Coulomb}}}}$.

So we can say that the correct answer to the question is Option B.

Additional Information:
It is important to know the concepts that are mentioned in the answer like potential difference and voltage.

By voltage we mean the electrical force that would drive an electric current between two particular points. Another way of defining voltage is that it is equal to energy per unit charge.

Electrical potential is defined as the energy which is required to move a unit of electric charge to a particular place in the presence of a static electric field.

Note: By 1 volt we also mean that difference between the electric potential of two points of a conducting wire when an electric current of 1 ampere dissipates 1 watt of power between those points.
We should also know that one volt will always drive one coulomb of charge carriers which are electrons through a resistance of 1 ohm in 1 second. Voltage can be either direct or alternating.