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Electric current and charge

Electric current and charge

Electrons moving along a wire past a checkpoint line, labelled to show current as the rate of flow of charge

Electric current tells us how quickly charge passes a point in a circuit. In metal wires the moving charge carriers are electrons, but in liquids or gases the charge can be carried by ions.

Basics of electricity Lesson

  1. A Level
  2. /Physics
  3. /Basics of electricity

Step-by-step lessons on AQA A Level Physics Basics of electricity. Each one builds up to exam-style questions. Physics is one of the most mathematically demanding A Levels -- at least 40% of the marks require maths skills at Level 2 (GCSE) standard or above, so build calculation and graph-handling fluency alongside the conceptual content from the start.