English National Curriculum - Science Science

12. Explore AC and DC Current

Mission Objectives

Describe what's meant by direct current which is also called DC, and alternating current which is also called AC

Use an oscilloscope trace to work out the features of an AC supply

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Keywords

Words and meanings to learn

AC

Meaning alternating current, a current which changes magnitude as well as reverses direction regularly.

DC

Meaning direct current, a current which flows in one direction only.

transformer

A device used within an alternating current which can adjust the voltage or potential difference.

frequency

The rate that current changes direction per second.

oscilloscope

Device which shows oscillations which can be viewed on a screen.

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