Resistance of components will affect circuit

• Higher resistance = low current
• Equiptment

  • A voltmeter, to measure potential difference.
  • A metre rule, tape and crocodile clips, to adjust the length of the wire.
  • Fixed resistors (e.g. 10 Ω)
  • A power pack
  • Connecting leads,
  • An ammeter,
• Step 1: Build a series circuit with one filament lamp, ammeter and power pack.

  Step 2: Connect a voltmeter in parallel with the filament lamp.

  Step 3: Switch on your circuit, record the current and potential difference readings on your ammeter and voltmeter.
• Step 4: Immediately switch off cicuit to avoid overheating.

  Step 5: Add another filament lamp in series with the first, making sure the voltmeter is in parallel with both resistors.
• Step 6: Repeat 3 and 4

  Step 7: Keep adding filament lamps in series, to get results for up to 5 filament lamps in series.
• Step 8: Reset your circuit so there is just one filament lamp again. Step 9: Add a second filament lamp, this time in parallel with the first
• Step 10: Switch on circuit, record the current and potential difference, then switch off your circuit

  Step 11: Keep adding filament lamps in parallel, to get results.
• Why is the more lamps added in series, the higher the total resistance?

  electrons that flowed through the circuit had to pass through every lamp .The more lamps the electrons passed through =

  more energy it takes for the electrons to flow.
• Why in parallel more lamps added the lower the resistance?

  The electrons only had to pass through one lamp adding more lamps crested another path for electrons to flow through. Therefore, less energy is required to push the electrons through the circuit.