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2.3.1 Direct and alternating potential difference
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Two ways a supply can act

Two ways a supply can act

A direct potential difference, or dc, acts in one direction only. A cell or battery supplies dc, so its terminals keep the same polarity: one terminal remains positive and the other remains negative.

2.3.1 Direct and alternating potential difference Lesson

  1. GCSE
  2. /Physics
  3. /2.3.1 Direct and alternating potential difference

Step-by-step lessons on AQA GCSE Physics 2.3.1 Direct and alternating potential difference. Each one builds up to exam-style questions. Build a strong grip on equations, units and Key Stage 3 fundamentals before tackling the more demanding topics like electromagnetism, the particle model of matter and space physics.

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