Suppose you have a 12-V battery, a lightbulb, and some wires that you can use to connect them.
(a) Draw a diagram that shows the battery connected to the lightbulb, set up in such a way that the light bulb glows. Show how the wires go from one object to another.
b) If the lightbulb uses 55 W of power (which is about what a car’s headlight uses), what is the current flowing out of the high-voltage (+) end of the battery? What is the current flowing into the low-voltage (-) end of the battery?
(c) Suppose the battery as a sticker that says “This 12V battery contains 50 Amp-hours.” This unit indicates a product of Amps and hours.