Switch S is now opened. Will the device still function at maximum power? Write down YES or NO. Explain the answer without doing any calculations.

Here's the continuation of the solution for Question 9.

9.2 Calculate the current that passes through the electrical device.
The electrical device functions at its maximum power of $5 \, \text{W}$ and has a resistance of $5 \, \Omega$.

Step 1: Use the formula for power in terms of current and resistance.

$$P = I^2 R$$

Step 2: Substitute the given values and solve for $I$.

$$5 \, \text{W} = I^2 (5 \, \Omega)$$ $$I^2 = \frac{5 \, \text{W}}{5 \, \Omega}$$ $$I^2 = 1 \, \text{A}^2$$ $$$$