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  3. Esher College, Thames Ditton (Esher)
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  5. GCSEs
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  7. GCSE AQA 9-1 TRIPLE PHYSICS

Summary

Summary P2 Electricity
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A complete summarised group of documents complete for GCSE Physics AQA 9-1. To make these Summaries I used 3 sources: The CGP revision guide, My GCSE Science Videos and Free science lessons videos. I achieved an 8 in GCSE AQA Triple Physics.

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Document information

  • May 30, 2019
  • 8
  • 2017/2018
  • Summary

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  • gcse aqa 9 1 triple physics

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P2 Electricity
Current
 Flow of electrical charge
 Electrical flow will only flow in a complete circuit
 Unit is ampere ‘A’
 Potential difference (voltage) driving force that pushes the charge around ‘V’
 Resistance is anything that slows the flow down
 The current flowing through a component depends on the potential difference (voltage) across it
and the resistance of the component

Total charge
 Q- charge, measured in C
 I- Current, measured in A
 T- time measured in seconds



Circuit Symbols




Resistance and V=IR
Voltage =
Current*Resistance

Investigating Resistance
 Ammeter- measurers current in amps (should be places in series)
 Voltmeter- measures potential difference (voltage)
1. Attach a crocodile clip to the wire level with 0 cm on the ruler
2. Attack the second crocodile clip (e.g.) 10 cm away
3. Close the switch, record the current through the wire and the voltage
4. Open the switch and move the second crocodile clip another 10cm down
5. Repeat this for a number of times
6. Use current and pd (voltage) to calculate the resistance
7. Plot a graph and you should get a straight line (resistance is directly proportional to length)

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