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Explain why a hair dryer has a high-heat setting with a lower resistance than the low-heat setting

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Since a higher resistance would have brought about more warmth misfortune, yet the higher is present, the more vitality is lost to warm. In this manner, a lower resistance would discharge more warmth. Power is equivalent to voltage squared partitioned by resistance. In this way, for a given voltage, the lower the resistance the higher the power.
User Vijay Katam
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