Based on the data, what conclusion can you draw about the relationship between the number of output devices (like bulbs) in a circuit and how long the battery lasts?

The graph shows that:

• 1 bulb: ~20 hours battery life
• 2 bulbs: ~12 hours battery life
• 3 bulbs: ~8 hours battery life
• 4 bulbs: ~5 hours battery life

As the number of light bulbs (output devices) connected to the battery increases, the battery's life span decreases. This indicates an inverse relationship.

Answer:
The more output devices (like bulbs) connected in a circuit, the shorter the battery lasts.