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Use Differentials to Approximate the Change in the Wattage W

Question 146

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Use differentials to approximate the change in the wattage W of a flood light with a resistance R = 8 ohms,if the current I is increased from 4 amperes to 4.2 amperes.(Hint: Use W = Use differentials to approximate the change in the wattage W of a flood light with a resistance R = 8 ohms,if the current I is increased from 4 amperes to 4.2 amperes.(Hint: Use W = .)
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