Question

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

Explanation:

Step1: Identify the formula

Use Ohm's law $V = IR$, where $V$ is potential - difference, $I$ is current, and $R$ is resistance.

Step2: Substitute the given values

Given $I = 0.3\ A$ and $R=25\ \Omega$. Substitute into the formula: $V=(0.3\ A)\times(25\ \Omega)$.

Step3: Calculate the result

$V = 7.5\ V$.

Answer:

$7.5$