#13
4.2.1.2 Current
Paper 1 · Higher combined
Spec reference: 4.2.1 (subtopic).
What you need to know
- current.
- Energy Stores
- kinetic Moving objects have kinetic
- energy.
- thermal All objects have thermal energy.
- chemical Anything that can release energy
- during a chemical reaction.
- elastic potential Things that are stretched.
Self-assessment (checklist)
- I can state what is needed for electrical charge to flow in a
- I can give a definition for electric current and describe
- I can recall and apply the correct equation to calculate
- I can rearrange the equation linking charge flow, current
- I can compare the value of the current at any point in a
Key steps (method)
- Identify what the question is testing and use the correct equation/definition.
- Show substitutions and units clearly.
Common mistakes
- Unit conversions, rearranging errors, or quoting a law without applying it.