368590
Beschreibung
Karteikarten von PatrickNoonan, aktualisiert more than 1 year ago
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Erstellt von PatrickNoonan
vor etwa 11 Jahre
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| Frage | Antworten |
| What is voltage? | Voltage can be thought of as the pressure pushing charges along a conductor, while the electrical resistance of a conductor is a measure of how difficult it is to push the charges along. |
| What is the resistance of a material dependent on? | The resistance (R) of a material depends on its length, cross-sectional area, and the resistivity , a number that depends on the material: |
| What is power? | Power is the rate at which work is done. |
| 1 W = ? J/s | 1 W = 1 J/s |
| Which is cheaper? Power from a wall socket or power from a battery? | Wall socket is much cheaper |
| Batteries produce AC or DC currents? | DC |
| Wall sockets produce AC or DC current? | AC |
| If R= p/I^2 then what is the resistance of a 12 watts on a 3 watt current? | 1.33' ohm |
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