Chapter 6.2, Problem 14R

To determine

To explain: The resistance of the heating element in an electric heater changes as it gets hotter and hotter, transferring thermal energy to the heater’s surroundings at a faster and faster rate?

Explanation of Solution

Introduction:

Resistors are devices used to reduce current in a circuit by reducing the flow of electrons.

Resistors reduce flow of current by converting electrical energy to thermal energy. As the heater gets hotter and hotter, it converts more electrical energy to thermal energy. To do so, it needs more resistance. Therefore, as the heater gets hotter, the resistance increases.