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The resistances of most substances increase when they are heated. A bulb for a ashlight using 3.0 V has a resistance of 2.0 ohms when

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The resistances of most substances increase when they are heated. A bulb for a ashlight using 3.0 V has a resistance of 2.0 ohms when cold and 24 ohms when hot. Calculate the current (Amps) through the bulb when (a) cold and (b) hot. Claculate the power consumed when (n) cold and (d) hot. Cold Hot

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