Question: Four 1.5-V cells are connected in series to a 12- lightbulb. If the resulting current is 0.45 A, what is the internal resistance of each

Four 1.5-V cells are connected in series to a 12-Ω lightbulb. If the resulting current is 0.45 A, what is the internal resistance of each cell, assuming they are identical and neglecting the wire?

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