Given:
The current in the circuit is I = 0.5 A
The resistor in the circuit is R = 3 ohms
To find the potential drop across the circuit.
Explanation:
The potential drop can be calculated as
[tex]\begin{gathered} V=IR \\ =\text{ 0.5}\times3 \\ =\text{ 1.5 V} \end{gathered}[/tex]Thus, the potential drop is 1.5 V.