Flashcards
Electricity
Cards in this deck (29)
- 1What happens when insulating materials are rubbed against each other?They become electrically charged.
- 2What particle is rubbed off between each insulating material when they are rubbed together?Electrons. (which have negative charges)
- 3How does one of the insulating materials become negatively charged?It gains electrons. (from the other insulating material)
- 4How does one of the insulating materials become positively charged?It loses electrons. (to the other insulating material)
- 5If two electrically charged materials, which carry the same charge, are brought near to each other what will happen?They will repel each other.
- 6If two electrically charged materials, which carry different charges, are brought near to each other what will happen?They will attract each other.
- 7What is electric current?The flow of electric charge.
- 8What does this circuit symbol represent?Open switch.
- 9What does this circuit symbol represent?Closed switch.
- 10What does this circuit symbol represent?Lamp.
- 11What does this circuit symbol represent?Fuse.
- 12What does this circuit symbol represent?Cell.
- 13What does this circuit symbol represent?Battery.
- 14What does this circuit symbol represent?Resistor.
- 15What does this circuit symbol represent?Voltmeter.
- 16What does this circuit symbol represent?Ammeter.
- 17What does this circuit symbol represent?Light dependant resistor. (LDR)
- 18What does this circuit symbol represent?Thermistor.
- 19What does this circuit symbol represent?Variable resistor.
- 20What does this circuit symbol represent?Diode.
- 21Which component does this current-potential difference graph represent and why?A filament bulb because the graph shows that the resistance of the filament bulb increases as the temperature of the bulb increases.
- 22What component does this graph represent and why?A diode, because it shows current only flowing in one direction, the diode has a very high resistance in the reverse direction.
- 23What are mains electricity cables made from and why?The outside layer is made from plastic because it is a good, flexible insulator. The two or three wires inside are made from copper as they are good conductors.
- 24What colour is the neutral wire?Blue.
- 25What colour is the Earth wire?Green and yellow stripes.
- 26What colour is the live wire?Brown.
- 27What is direct current (d.c.)?Current that always passes in the same direction.
- 28What is alternating current (a.c.)?Current which is constantly changing direction.
- 29What is the frequency and potential difference of mains electricity?50 hertz and 230 V. (approx)
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- GCSE Physics - Electricity (Includes; questions, answers & pictures)
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- Deleted user · Apr 2019
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- Apr 4, 2019
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- Created by megfindley · Apr 3, 2016
- Copied by bill fingleton · Apr 4, 2019
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