In a practical Wheatstone bridge, what is the effect of temperature on resistance measurements?
Correct Answer: Temperature affects resistance measurements.
- Step 1: Understand that a Wheatstone bridge is used to measure resistance.
- Step 2: Know that resistance can change with temperature.
- Step 3: Recognize that different materials (like copper, aluminum, etc.) have different responses to temperature changes.
- Step 4: Learn about the temperature coefficient, which tells us how much a material's resistance changes with temperature.
- Step 5: Realize that if the temperature increases, the resistance of some materials will increase, while for others it may decrease.
- Step 6: Conclude that when using a Wheatstone bridge, you need to consider the temperature of the resistors to get accurate measurements.
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