technician a says that a 12 - volt battery has six cells. technician b says that there are 12 cells in a…

technician a says that a 12 - volt battery has six cells. technician b says that there are 12 cells in a battery, each with a nominal voltage of 1.0 volts. who is correct? a. technician a b. technician b c. both technician a and technician b d. neither technician a nor technician b

technician a says that a 12 - volt battery has six cells. technician b says that there are 12 cells in a battery, each with a nominal voltage of 1.0 volts. who is correct? a. technician a b. technician b c. both technician a and technician b d. neither technician a nor technician b

Answer

Answer:

A. Technician A

Explanation:

Step1: Recall battery - cell voltage

A typical lead - acid automotive battery cell has a nominal voltage of 2 volts.

Step2: Calculate number of cells for 12 - volt battery

To get a 12 - volt battery from cells of 2 volts each, we use the formula $n=\frac{V_{total}}{V_{cell}}$, where $V_{total} = 12$ volts and $V_{cell}=2$ volts. So $n=\frac{12}{2}=6$ cells. Technician A is correct. Technician B is wrong because if there were 12 cells each with 1.0 volt, the total voltage would be $12\times1 = 12$ volts, but standard battery cells in a 12 - volt automotive battery are 2 - volt cells, not 1 - volt cells.