The capacity of a storage battery, such as those used in automobile electrical systems, is rated in ampere-hours (a⋅h). A 50 a⋅h battery can supply a current of 50 a for 1. 0 h, or 25 a for 2. 0 h, and so on.

Which source would provide the most bias-free information about smoking and increased health risks? a) a website created by heart disease patients b) a research study conducted by the mayo clinic eliminate c) a public service message sponsored by tobacco companies d) an online question forum conducted by attorneys for cardiac specialists