The heating element of a toaster is a long wire of some metal, often the alloy nichrome, which heats up when a potential difference is applied across it. In the U.S.A., plugging a toaster into the wall outlet is equivalent to applying a 120-V potential source across it. For these problems, consider a 300-W toaster connected to a wall outlet.
In one experiment, we use a collection of toasters with various resistances. We record the power consumed by each. Which graph best represents the relationship between power consumption and resistance?