Mains Electricity 0.0 / 5 ? PhysicsEleccyGCSEAQA Created by: asho glenoCreated on: 09-04-15 18:52 The UK mains supply is approximately... 230V and is an A.C. - Alternating Current 1 of 13 An a.c. is constantly changing direction... and the mains has a frequency of 50 Hz 2 of 13 The voltage of a battery is about... 1.5V and is a D.C. - Direct Current 3 of 13 A d.c. flows in only... one direction 4 of 13 Frequency is how many... complete waves per second (Hz) F= 1/T 5 of 13 Time Period is how many... seconds fro 1 complete wave (s) T= 1/F 6 of 13 Trace... is a graph of voltage by time 7 of 13 Voltage Sensitivity... How many volts per division (cm or square) going vertically on the oscilloscope 8 of 13 Time Base... How much time passes in each division (" ") horizontally on the oscilloscope 9 of 13 If the trace on the screen is a straight line ,it is a... d.c. supply as it is always at the same voltage 10 of 13 An a.c. gives a regular repeating wave, which you can... work out the period and frequency of the supply 11 of 13 Gain dial controls how many... volts each division represnts on th vertical axis 12 of 13 Time Base dial controls how many... milliseconds (1ms = 0.001s) each division represents on the horizontal axis 13 of 13
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