GCSE Physics - Alternating (AC) and Direct Current (DC) #21

The video tutorial explains the differences between alternating current (AC) and direct current (DC). AC constantly changes direction, while DC flows in one direction. UK mains electricity is AC, operating at 50 Hertz and around 240 volts. Direct current is found in batteries and cells. Oscilloscopes are used to visualize voltage changes over time.

What is the main difference between alternating current (AC) and direct current (DC)?

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How does the potential difference in UK mains supply fluctuate?

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What devices are used to display potential difference graphs?

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In what applications would you typically find direct current?

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Explain the significance of the frequency (Hertz) in alternating current.

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