How to calculate the potential difference across a resistor please solve in English

Ohm's Law states that the potential difference ($V$) across a resistor is directly proportional to the current ($I$) flowing through it, and the resistance ($R$) of the resistor.

$$V = I \times R$$

Where:

• $V$ is the potential difference in volts (V).
• $I$ is the current in amperes (A).
• $R$ is the resistance in ohms ($\Omega$).

Let's say a current of $2 \text{ A}$ flows through a resistor with a resistance of $10 \text{ } \Omega$.

$$V = 2 \text{ A} \times 10 \text{ } \Omega$$ $$V = \boxed{20 \text{ V}}$$