You put some potatoes in a big pot of cold water with the lid not too tightly cl

Question

You put some potatoes in a big pot of cold water with the lid not too tightly closed. Which of the following methods to cook the potatoes would use the least amount of energy? Explain your reasoning.

a) Put the heat on full force. But when the water boils, turn the heat way down so that the water just keeps boiling.

b) Turn the heat on full force, and keep it there.

c) Turn the heat on very low. But when the water boils, turn the heat way up so that the water keeps boiling.

d) Turn the heat on very low, and keep it there.

e) Put the heat at some medium value.

Explanation / Answer

c) Turn the heat on very low. But when the water boils, turn the heat way up so that the water keeps boiling.

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