What is the effect of connecting battery cells in series?

Connecting battery cells in series results in an increase in voltage. When cells are arranged in series, the voltage of each individual cell adds together to produce a higher total voltage. For example, if you have two 12-volt batteries connected in series, the combined voltage becomes 24 volts. This principle is foundational in electrical systems where higher voltages are needed for various applications, such as in power distribution.

The other options do not accurately reflect the behavior of batteries in series. While current remains the same through each cell in a series configuration, the overall voltage increases. Therefore, the significant outcome of arranging batteries in this manner is the cumulative increase in voltage output, making it an essential concept in electrical engineering and lineman work.