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A heating element is divided into two identical halves, and then just one of those halves is used in the heater. The amount of heat produced will become

1. four times
2. twice as much
3. half as much
4. one-fourth as much

Correct answer: twice as much

Solution

Using one half of the heating element means that the total surface area available for heat production is reduced, but since the two halves are identical, the remaining half can still produce heat at the same rate, resulting in twice the heat output compared to using just a quarter of the original element.

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