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

Why does the potential difference across two or more components add up to the potential difference across the battery?

the work done in each unit of charge in the battery must equal the work done in the components

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

Quiz

hannah.pickard 3 questions

Take the quiz

1Why do resistors get hotter when there is an electric current through them?
1. Acollisions between moving charges and stationary ions in the wire cause a heating effect
2. Benergy from the current is wasted as heat
2Why does the potential difference across two or more components add up to the potential difference across the battery?
1. Anone of it is wasted
2. Bthe work done in each unit of charge in the battery must equal the work done in the components
3Why is the potential difference largest across the component with the most resistance?
1. Amore work is done by the charge moving through a large resistance than a smaller one
2. Bit takes more energy to move across a bigger resistance

Description: Higher Science (5's) (Physics) Quiz on P5 (Higher bits), created by hannah.pickard on 22/04/2013.
Author: hannah.pickard
Language: English
Views: 157
Tags: physics science (5's)science (5's)physics higher
Rating: No ratings yet
Rate this quiz
Rate this quiz