Question 6
The graph below shows how the resistance of the thermistor changes with temperature.
(a) Using information from the graph above, deduce the current through the thermistor at a temperature of 50°C if the voltage across it is at 5.2 V. [3 points]
(b) A thermistor is a resistance thermometer or a resistor whose resistance is dependent on temperature. The thermistor is used in the circuit below.
Explain what happens to the brightness of the light bulb when temperature increases. [2 points]
(a) Using information from the graph above, deduce the current through the thermistor at a temperature of 50°C if the voltage across it is at 5.2 V. [3 points]
(b) A thermistor is a resistance thermometer or a resistor whose resistance is dependent on temperature. The thermistor is used in the circuit below.
Explain what happens to the brightness of the light bulb when temperature increases. [2 points]