Question

In standard automobile batteries with six lead-acid cells in series, the emf of an individual lead-acid cell is:

(a) 1.0 V
(b) 2.0 V
(c) 6.0 V
(d) 12.0 V

Answer 1

The emf of an individual lead-acid cell in a standard automobile battery is 2.0 V, as each of the six cells in series contributes to the total emf of 12.0 V.

Step-by-step explanation:

The question pertains to the electromotive force (emf) of individual cells within a standard lead-acid car battery. Car batteries typically have six lead-acid cells in series, and each cell provides an emf of 2 V. Therefore, the combined total emf is 12 V (which is 6 times 2 V). This is the reason why standard automobile batteries are referred to as 12-V car batteries. Given the total emf and the number of cells, we can calculate the emf of a single cell by dividing the total emf by the number of cells.

So, the emf of an individual lead-acid cell in a series of standard automobile batteries is 2.0 V, making the correct answer choice (b) 2.0 V. This is because 12.0 V total emf divided by the 6 cells in series equals 2.0 V per cell.