35Potential Dividers SensorsHard1 mark
The diagram shows a thermistor and a variable resistor connected to a battery.
The temperature of the thermistor decreases.
What happens to the reading on the voltmeter, and which change to the resistance of the variable resistor is needed to cause the voltmeter reading to return to its initial value?
| voltmeter reading | change needed to resistance of variable resistor | |
|---|---|---|
| A | decreases | decrease |
| B | decreases | increase |
| C | increases | decrease |
| D | increases | increase |