To find the voltage \( V \), we can use the formula for power:

\[
P = V \times I
\]

Rearrange this formula to solve for \( V \):

\[
V = \frac{P}{I}
\]

Where:
- \( P = 10 \, \text{W} \) (power)
- \( I = 100 \, \text{mA} \) (current)

First, convert the current from milliamperes to amperes:

\[
I = 100 \, \text{mA} = 0.1 \, \text{A}
\]

Now, plug in the values:

\[
V = \frac{10 \, \text{W}}{0.1 \, \text{A}} = 100 \, \text{V}
\]

So, the voltage \( V \) is \( 100 \, \text{V} \).

Would you like more details or have any questions?

Here are 5 related questions to consider:
1. How would the voltage change if the current were doubled while maintaining the same power?
2. What would happen to the power if both voltage and current were halved?
3. How can you measure voltage in a circuit practically?
4. What is the relationship between power, voltage, and resistance?
5. How does changing the resistance in a circuit affect the voltage and current?

**Tip:** Always ensure your current is in amperes (A) when calculating voltage, as it keeps the units consistent for accurate calculations.

Learn how to calculate voltage (V) using the power (P) and current (I) values. Example problem: P = 10 W, I = 100 mA. Detailed step-by-step solution and conversion from milliamperes to amperes included. Suitable for high school students studying electricity and power calculations.

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