22.3 – Investigating the Effect of Temperature on Resistance (Leaving Cert Physics): Quizzes

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22.3 – Investigating the Effect of Temperature on Resistance
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What do these experiments investigate?

How resistance changes with temperature

Which two types of materials are investigated in these experiments?

Metallic conductors and thermistors

How does resistance change with temperature in metallic conductors?

Increases linearly

How does resistance change with temperature in thermistors?

Decreases exponentially

What capacity beaker is needed for these experiments?

500 ml

At what temperature intervals should measurements be taken?

Every 5°C

What shape is the graph for metallic conductor resistance vs. temperature?

Straight increasing line

Why does resistance increase in metallic conductors when heated?

Atoms vibrate more, impeding electrons

What precaution ensures uniform temperature in the liquid?

Stir continuously

Why are thermistors used as temperature sensors?

They have high sensitivity

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