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4. A flashlight uses two D cell 1.5 V batteries connected in serles to provide 3 volts cross ue ig bulb. The bulb draws 380 mA when turned on a. Calculate the resistance of the bulb b. Calculate the power dissipated c. If this flashlight was plugged into a wall (rather than using batteries) and we could keep the voltage and power the same. How much money would it cost to run the flashlight for one month (30 days) for 3 hours every day? The electric company charges about 7.1 cents per kWhr?
science   Advanced-Physics   
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0-38 3x o.38 p 1-14 Watt = 0.728 Cent

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