physics practicals

• Investigating the effect of wire length on resistance:

  • attach crocodile clip to the wire level with 0cm on ruler
  • attach second clip 10cm away (so you have a bit of wire in between them yk)
  • close the switch and record current
  • Repeat this for a number of different lengths, moving the crocodile clip 10cm each reading an record current (So like it will go to 10cm, to 20cm etc.)
  • Calculate the resistance for each measurement of wire.
  • Plot a graph which should be directly proportional. A STRAIGHT LINE :)