Question

In the expression \[U(r) = qV(r)\], the SI unit of the potential energy U is:

Options

• Newton per Coulomb (N/C)

• Joule (J)

• Volt (V)

• Coulomb (C)

Answer 1

Potential energy U is measured in Joules (J). Since \[U = qV\] with q in Coulombs and V in Volts, and 1 V = 1 J/C, the product C × V yields J.