Question

The SI unit of electrostatic potential is:

Options

• Newton/Coulomb (N/C)

• Joule·Coulomb (J·C)

• Coulomb/Joule (C/J)

• Volt (V), equivalent to Joule/Coulomb (J/C)

Answer 1

Since potential is work done per unit positive charge, its SI unit is Joule per Coulomb, which is named the Volt (V). Newton/Coulomb is the unit of electric field, not potential.