A cell with negligible internal resistance is connected in series to a thermistor, a fixed resistor and an ammeter. The thermistor is put into a beaker containing water, and the water temperature is raised slowly. A graph of current $I$ plotted against the thermistor temperature $T$ is drawn. Which graph might represent how $I$ changes with $T$?
Physics 9702 · AS & A Level · Resistance and resistivity