Question

If I were to use measure changing temperature using a resistor, how would I do it?

• A. Pass a current through the resistor and measure it. Change in current will give change in temperature.
• B. Connect a battery across the resistor. The battery's supply voltage changes with temperature.
• C. The resistor will change shape noticably for even small changes in temperature.
• D. I'll just use a thermometer

Answer 1

The correct option is A Pass a current through the resistor and measure it. Change in current will give change in temperature.

The change in current will be inversely proportional to the change in resistance. And the change in resistance is proportional to change in temperature.