If a current of 3 A flows through a wire of resistance 8 ohms, calculate the potential difference applied across its ends.

Explanation

To solve the problem of calculating the potential difference across a wire when a current flows through it, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Given Values:**
- Current (I) = 3 A (amperes)
- Resistance (R) = 8 Ω (ohms)

2. **Use Ohm's Law:**
- Ohm's Law states that the potential difference (V) across a conductor is directly proportional to the current (I) flowing through it and the resistance (R) of the conductor. The formula is:
\[ V = I \times R \]

3. **Substitute the Given Values into the Formula:**
- Substitute I = 3 A and R = 8 Ω into the formula:
\[ V = 3 \, \text{A} \times 8 \, \Omega \]

4. **Calculate the Potential Difference:**
- Perform the multiplication:
\[ V = 24 \, \text{V} \, (\text{volts}) \]

5. **State the Result:**
- The potential difference across the ends of the wire is 24 volts.

### Final Answer:
The potential difference applied across the ends of the wire is **24 volts**.

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