Solved: (II) An ordinary flashlight uses two D-cell 1.5-V
Chapter , Problem 42(choose chapter or problem)
(II) An ordinary flashlight uses two D-cell 1.5-V batteriesconnected in series as in Fig. 25-4b (Fig. 25-37). The bulbdraws 380 mA when turned on. (a) Calculate the resistanceof the bulb and the power dissipated. (b) By what factorwould the power increase if four D-cells in series were usedwith the same bulb? (Neglect heating effects of the filament.)Why shouldnt you try this?
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