Resistance
Leaving Cert Physics · Electricity and Magnetism
Higher Level
The opposition a component offers to the flow of charge, defined as the potential difference across it divided by the current through it and measured in ohms. Electrical energy is converted to internal energy as charge passes through.
Ordinary Level
How strongly a component opposes the flow of charge, measured in ohms. A long thin wire has more of it than a short thick one.
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