Direct and Alternating Currents — AQA GCSE Combined Science: Synergy 8465
AQA GCSE Combined Science: Synergy · 8465
Direct and Alternating Currents
What you need to know
Differentiate between direct current (DC) and alternating current (AC) in terms of voltage and direction of flow.
Recall that cells and batteries supply direct current, which always passes in the same direction.
Recall that the domestic mains electricity supply in the UK is alternating current (AC) at a frequency of 50 Hz and a potential difference of about 230 volts.
