# P5 (Higher bits)

### Description

Higher Science (5's) (Physics) Quiz on P5 (Higher bits), created by hannah.pickard on 22/04/2013.
Quiz by hannah.pickard, updated more than 1 year ago
 Created by hannah.pickard almost 10 years ago
74
1

## Resource summary

### Question 1

Question
Why do resistors get hotter when there is an electric current through them?
• collisions between moving charges and stationary ions in the wire cause a heating effect
• energy from the current is wasted as heat

### Question 2

Question
Why does the potential difference across two or more components add up to the potential difference across the battery?
• none of it is wasted
• the work done in each unit of charge in the battery must equal the work done in the components

### Question 3

Question
Why is the potential difference largest across the component with the most resistance?
• more work is done by the charge moving through a large resistance than a smaller one
• it takes more energy to move across a bigger resistance

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