Define evaporation, condensation, and sublimation. Calculate the current through a bulb given its resistance and voltage.

Here are the solutions for two questions from this section, as per the instructions:

5. (a)

• i) Evaporation: The process where a liquid changes into a gas or vapor, typically from the surface of the liquid at a temperature below its boiling point.
• ii) Condensation: The process where a gas or vapor changes into a liquid, often seen as water vapor forming liquid water droplets. It is the opposite of evaporation.
• iii) Sublimation: The direct transition of a substance from the solid phase to the gas phase without passing through an intermediate liquid phase.

5. (b)
To calculate the current through the bulb, we use Ohm's Law, $V = IR$.

Step 1: Identify the