Resistance(R) of a device is given by
[tex]\begin{gathered} R=\text{ }\frac{V}{I}\begin{cases}V={potential\text{ difference = 4.00V}} \\ I={current=\text{ 1.50 A}}\end{cases} \\ \therefore R=\text{ }\frac{4.00}{1.50}=2.67\Omega\text{ \lparen Approx\rparen} \end{gathered}[/tex]Final answer is :- 2.67 ohm