Question

calculate the potential difference across a 25 - ω resistor if a 0.3 - a current is flowing through it.

Explanation:

Step1: Recall Ohm's Law

$V = I \times R$ where $V$ is potential difference, $I$ is current, $R$ is resistance.

Step2: Substitute values

$V = 0.3\,\text{A} \times 25\,\Omega$

Step3: Calculate the result

$V = 7.5\,\text{V}$

Answer:

7.5