Car bon-zinc dry cells (sometimes referred to as non- alkaline cells) have an emf of 1.54 V, and they are produced as single cells or in various combinations to form other voltages. (a) How many 1.54-V cells are needed to make the common 9-V battery used in many small electronic devices?
(b)What is the actual emf of the approximately 9-V battery?
(c) Discuss how internal resistance in the series connection of cells will affect the terminal voltage of this approximately 9-V battery.
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