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

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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

Descripción: Higher (Physics) Science (5's) Test sobre P5 (Higher bits), creado por hannah.pickard el 22/04/2013.
Autor: hannah.pickard
Idioma: English
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Etiquetas: physics science (5's)science (5's)physics higher
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