Spec 1PH0
Revise Edexcel GCSE Physics 10.4 Mains electricity with the question bank, lessons, revision guides, and flashcards.
Explain the difference between direct and alternating voltage. • Describe direct current (d.c.) as movement of charge in one direction only and recall that cells and batteries supply direct current (d.c.). • Describe that in alternating current (a.c.) the movement of charge changes direction. • Recall that in the UK the domestic supply is a.c., at a frequency of 50 Hz and a voltage of about 230 V.
