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Electric circuits

WJEC 3455QD — matched to your course.

Current, potential difference, resistance, power and energy.

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Electric circuits

Tailored to WJEC 3455QD.

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Subtopics and study areas

  • Use V = IR, Q = It and electrical power equations.
  • Describe current and potential difference in series and parallel circuits.
  • Explain resistance changes in common components.
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