Objective: to measure and observe resistance and voltage of sugar in certain drinks.
Apparatus:
- 5 cup (Mango juice,Watermelon juice, Apple juice, Orange juice and Pepsi)
- 1 cup of sugar
- 9v battery
- multimeter
Steps:
- pour juices in the each cup with the same level.
- put 1 teaspoon of sugar in the cup and stir it well then measure the resistance and voltage.
- repeat step 2 until 5 teaspoon of sugar been measure.
Result: the resistance and voltage value increase when each spoon of sugar been pour in the mineral water.
| Spoon | Pepsi | Watermelon | Orange | Apple | Mango |
| 1 | 4k = 1.438v | 7.5k = 2.14v | 5k = 1.67v | 5k = 1.67v | 6k = 1.87v |
| 2 | 6k = 1.87v | 9k = 2.37v | 5k = 1.67v | 6k = 1.87v | 7k = 2.05v |
| 3 | 6k = 1.87v | 11k = 2.62v | 5k = 1.67v | 8k = 2.22v | 9k = 2.37v |
| 4 | 8k = 2.22v | 12k = 2.73v | 8k = 2.22v | 8k = 2.22v | 8k = 2.22v |
| 5 | 12k = 2.73 | 14k = 2.92v | 9k = 2.37v | 10k=2.5v | 11k = 2.63v |

Conclusion: When sugar mixed can produce a different resistance and voltage because fruits. Each of the fruit contain different amount of glucose known as natural sugar. From the glycemic index, watermelon has a high level of sugar because it has high carbohydrate. Apple has low level of sugar and it suitable for diabetic patient.
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