Mains Electricity 0.0 / 5 ? PhysicsElectricityGCSEAQA Created by: asho glenoCreated on: 09-04-15 18:47 The UK mains supply is approximately... 230V and is an A.C. - Alternating Current 1 of 5 An a.c. is constantly changing direction... and the mains has a frequency of 50 Hz 2 of 5 The voltage of a battery is about... 1.5V and is a D.C. - Direct Current 3 of 5 A d.c. flows in only... one direction 4 of 5 Frequency is how many... complete waves per second (Hz) F= 1/T 5 of 5
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