4048102
Description
Flashcards by Luca Truen, updated more than 1 year ago
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Created by Luca Truen
about 10 years ago
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| Question | Answer |
| Electricity travels to our homes through | - step up transformers - pylons - step down sub-stations - electricity boxes - wall sockets |
| Source | where a thing comes from/starts |
| Device | something that changes the electricity into output energy |
| Systems will not work without these three stages | - source - device - output |
| Electrical circuits need these components | - a source of energy - conducting material - device |
| Source for electricity can be... | mains electricity or cell [or many cells such as battery] |
| Kettle | heat |
| Light bulb | light |
| Buzzer | sound |
| Motor | movement |
| When you connect all components it equals... | system |
| If pathway is closed, it is... | unbroken/complete [electricity flows] call this pathway a circuit |
| If pathway is open, it is... | broken [electricity doesn't flow] |
| Circuit diagrams: Cell | two lines, 1 short and 1 long |
| Circuit diagrams: Bulb | X in circle |
| Circuit diagrams: Closed switch | line with 2 dots |
| Circuit diagrams: in line fuse | line with box, in box is amp value |
| Circuit diagrams: ammeter | A in circle |
| Circuit diagrams: Voltmeter | V in circle |
| Circuit diagrams: Electrical Motor | M in a circle |
| Circuit diagrams: Direct current | = in circle |
| Circuit diagrams: Alternating current | ~ in circle |
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