M Prep | MCAT 2015 Question of the Day - Prep, Practice Questions, and More!

Q:

Lead acid batteries, like those typically found in vehicles, are composed primarily of lead and sulfuric acid. An individual cell of the battery has a voltage of 2 V, but batteries for cars typically will have a voltage of 12 V. This increase in voltage can be accomplished in which of the following ways?

A

placing the cells in series

B

placing the cells in parallel

C

adding more lead to the cells

D

increasing the concentration of sulfuric acid in the cells