Difference between revisions of "Direct Current"
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|[[File:OscilloscopeScreenDC1.png|center|290px]] | |[[File:OscilloscopeScreenDC1.png|center|290px]] | ||
|[[File:OscilloscopeScreenDC2.png|center|290px]] | |[[File:OscilloscopeScreenDC2.png|center|290px]] | ||
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| style="height:20px; width:290px; text-align:center;" |This is a constant '''direct current''' from a 3V [[battery]]. | | style="height:20px; width:290px; text-align:center;" |This is a constant '''direct current''' from a 3V [[battery]]. | ||
| style="height:20px; width:290px; text-align:center;" |This is a fluctuating '''direct current'''. | | style="height:20px; width:290px; text-align:center;" |This is a fluctuating '''direct current'''. | ||
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|[[File:OscilloscopeScreenDC3.png|center|290px]] | |[[File:OscilloscopeScreenDC3.png|center|290px]] | ||
|[[File:OscilloscopeScreenDC4.png|center|290px]] | |[[File:OscilloscopeScreenDC4.png|center|290px]] | ||
Revision as of 15:41, 1 March 2019
Key Stage 4
Meaning
Direct current (DC)is when electricity only flows in one direction.
About Direct Current
- Direct current is produced by electrical cells, batteries and dynamos.
- Direct current can be made from an alternating current using a diode.
- Direct current is needed to charge a cell or battery.
- Direct current is used in electrolysis.
Examples
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| This is a constant direct current from a 3V battery. | This is a fluctuating direct current. |
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| This is the direct current caused by mains electricity being passed through a diode. | This is the direct current caused by mains electricity being passed through a Rectifier which is a set of diode. |