Flashcards
Additional Physics
Cards in this deck (27)
- 1Name a positive use for static electricity.EITHER: Smoke Precipitator, Photocopier, sandpaper, fence painting.
- 2Name a negative aspect of static electricity.EITHER: Lightning OR grain chutes, fuel tank filling, paper rollers etc (It causes friction which = a spark therefore explosions)
- 3What is static electricity?A build up of friction between two (or more) objects
- 4Describe the process.Two insulating objects are rubbed together. Electrons from one move to the other. This leaves a negative charge on one and positive on the other. The charged objects cabn attract small objects.
- 5Like charges repel...Opposite charges attract.
- 6As charge builds up......so does voltage.
- 7Why can high voltage cables be dangerous?Because the high voltage can shock you.
- 8VoltageVoltage=Energy/Charge
- 9CurrentThe flow of electrons around the circuit
- 10ResistanceSlows the electrons down
- 11Increase in voltage......increase in current.
- 12Increase in resistance.......decrease in current flowing.
- 13AmmeterMeasures current when placed in series.
- 14VoltmeterMeasures voltage when placed in parallel
- 15Cell
- 16Battery
- 17Diode
- 18LDR Light Dependent Resistor
- 19LED Light Emitting Diode
- 20Fuse
- 21Fixed Resistor
- 22Bulb
- 23Closed Switch
- 24Open Switch
- 25Variable Resistor
- 26Thermistor
- 27How does a Thermistor work?Hot conditions= Low resistance
Cool conditions= high resistance
Good for temperature detectors
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- Flashcards on Additional Physics , created by Rosie Rigby on 01/05/2014.
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- Rosie Rigby
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