Resistance of a wire

• IV

  Length of wire
• CV

  Thickness of wire

  Material of wire

  Temperature of wire
• DV

  Resistance of wire
• Step 1

  Connect battery to ammeter the connect the ammeter to one end of the resistance wire
• Step 2

  Attach the resistance wire and metre ruler using crocodile clip at the zero
• Step 3

  Take second crodile clip and connect it to the other end of the metre ruler then attatch it to the other terminal of the battery
• Step 4

  Add voltmeter in parallel to the battery
• Step 5

  Take measurements of the 100 cm end to 30 cm
• Step 6

  Record voltage and current every 10 cm
• Step 7

  Work out resistance at each length of the wire by doing resistance = voltage/current