6.2.3.1 Alternating and The potential difference 0.5 Describe the potential difference What is the difference direct potential across cells and batteries is across a cell in a circuit as being between direct and difference. always in the same direction. in one direction only. alternating potential The potential difference does difference? State some common sources of not change polarity. a direct potential difference What are common sources of Mains electricity The potential difference of including cells, batteries and direct and alternating supply. mains electricity changes solar cells. potential difference? direction. The potential Describe the potential difference difference changes polarity. of an alternating supply as Research the use of direct Mains electricity is an a.c. changing direction. and alternating potential supply. In the UK it has a Describe mains electricity in the difference. Find out why the frequency of 50 Hz and is home in terms of potential USA used direct potential about 230 V. difference, frequency and type of difference, then changed to current. an alternating potential difference.. Use an oscilloscope to display direct and alternating potential difference signals, or the animation on Boardworks.
6.2.3.1 Alternating and direct potential difference. Mains electricity supply. The potential difference across cells and batteries is always in the same direction. The potential difference does not change polarity. The potential difference of mains electricity changes direction. The potential difference changes polarity. Mains electricity is an a.c. supply. In the UK it has a frequency of 50 Hz and is about 230 V. 0.5 Describe the potential difference across a cell in a circuit as being in one direction only. State some common sources of a direct potential difference including cells, batteries and solar cells. Describe the potential difference of an alternating supply as changing direction. Describe mains electricity in the home in terms of potential difference, frequency and type of current. What is the difference between direct and alternating potential difference? What are common sources of direct and alternating potential difference? Research the use of direct and alternating potential difference. Find out why the USA used direct potential difference, then changed to an alternating potential difference.. Use an oscilloscope to display direct and alternating potential difference signals, or the animation on Boardworks.
AQA-8464-SOW-ELEC.DOCX