Which changes would cause an increase in the resistance of a wire? Choose three correct answers.

A wire’s resistance increases when it is thinner or longer: a thinner wire has less area for current to flow through, while a longer wire gives current a longer path. For a typical metal wire, increasing temperature also increases resistance because the hotter metal atoms impede the flow of electrons more. Therefore, the correct changes are using a thinner wire, increasing its temperature, and using a longer wire.

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