🗊Презентация Direct & alternating current

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Direct & alternating current, слайд №1Direct & alternating current, слайд №2Direct & alternating current, слайд №3Direct & alternating current, слайд №4Direct & alternating current, слайд №5Direct & alternating current, слайд №6Direct & alternating current, слайд №7Direct & alternating current, слайд №8
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Слайды и текст этой презентации

Слайд 1


Direct Current D.C. stands for direct current. Batteries supply d.c. With d.c. the current is always in travelling in the same direction. The current flows from negative ( - ) to positive ( + ) as the electrons are negatively charged and so are attracted towards the positive terminal of the battery.
Описание слайда:
Direct Current D.C. stands for direct current. Batteries supply d.c. With d.c. the current is always in travelling in the same direction. The current flows from negative ( - ) to positive ( + ) as the electrons are negatively charged and so are attracted towards the positive terminal of the battery.

Слайд 2


Alternating Current A.C. stands for alternating current. The mains supplies a.c. An a.c. current flows backwards and forwards in a circuit. The symbol for an a.c. power supply is The current in an a.c. circuit flows one way then the other alternately.
Описание слайда:
Alternating Current A.C. stands for alternating current. The mains supplies a.c. An a.c. current flows backwards and forwards in a circuit. The symbol for an a.c. power supply is The current in an a.c. circuit flows one way then the other alternately.

Слайд 3


Direct & alternating current, слайд №3
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Direct & alternating current, слайд №4
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Direct & alternating current, слайд №5
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Слайд 6


AC and DC on an Oscilloscope A d.c. current on an oscilloscope A direct current 1. is always the same size 2. travels in only one direction
Описание слайда:
AC and DC on an Oscilloscope A d.c. current on an oscilloscope A direct current 1. is always the same size 2. travels in only one direction

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Direct & alternating current, слайд №7
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Слайд 8


The Mains Supply The mains supply is an a.c. source. An alternating current is a wave. The mains frequency is 50 Hz and the size of the mains voltage is quoted as 230 V. The declared value is a sort of average value and is always less than the peak value.
Описание слайда:
The Mains Supply The mains supply is an a.c. source. An alternating current is a wave. The mains frequency is 50 Hz and the size of the mains voltage is quoted as 230 V. The declared value is a sort of average value and is always less than the peak value.

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