A certain toaster has a heating element made of Nichromeresistance wire. When the toaster is first connected to a 120. - Vsource of potential difference (and the wire is at a temperatureof 20.0°C), the initial current is 1.80 A but the currentbegins to decrease as the resistive element warms up. Whenthe toaster reaches its final operating temperature, the currenthas dropped to 1.53 A. (a) Find the power the toasterconverts when it is at its operating temperature. (b) What isthe final temperature of the heating element?

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Resistivity

Resistivity is a characteristic property of the conductor’s material that measures the extent to which the material opposes the flow of current. It is denoted by the Greek letter “rho”. Electrical resistivity, also known as specific resistance, depends on the nature of the material of the conductor and is unaffected by its dimensions.