This experiment shows that water will conduct electrical current. But, resistance can vary by amount and purity of the water. In the first picture, tap water is used to conduct electrical current. The LED is dimly lit because the water has a high resistance. In the last picture, salt was added to the same water causing the LED to become brightly lit. To conclude, water will conduct electrical current, but pure water has a higher resistance then water with salt dissolved in it. |
| Fresh Water (Dim LED) |
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| No Water (off LED) |
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| Salt Water (Bright LED) |
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