A current `0.2 A` flows in a wire of resistance `15 Omega`. Find the potential difference across the ends of the wire.

Answer

To find the potential difference across the ends of a wire with a given current and resistance, we can use Ohm's Law, which states:

\[ V = I \times R \]

Where:
- \( V \) is the potential difference (voltage) across the wire,
- \( I \) is the current flowing through the wire,
- \( R \) is the resistance of the wire.

### Step-by-Step Solution:

1. **Identify the given values:**
- Current (\( I \)) = 0.2 A
- Resistance (\( R \)) = 15 Ω

2. **Apply Ohm's Law:**
- Substitute the values into the formula:
\[ V = I \times R \]
\[ V = 0.2 \, \text{A} \times 15 \, \Omega \]

3. **Calculate the potential difference:**
- Perform the multiplication:
\[ V = 0.2 \times 15 = 3 \, \text{V} \]

4. **State the final answer:**
- The potential difference across the ends of the wire is:
\[ V = 3 \, \text{volts} \]

### Final Answer:
The potential difference across the ends of the wire is **3 volts**.

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