Resistance investigation

What does resistance depend on?

Whether the components are in series or parallel

How do you investigate the resistance due to wire length?

1) Attach a crocodile clip to the wire level with 0cm on the ruler
2) Attach the second crocodile clip to the wire

What should the graph for investigating resistance look like?

Directly proportional

What kind of systematic errors could take place in the investigation for resistance?

If your graph doesn't go through the origin

What kind of wire should you depend upon during the investigation for resistance?

A thin wire will give you the best results. Make sure it's as straight as possible

What may happen to the wire during the investigation for resistance?

The wire may heat up during the experiment which will affect its resistance. Leave the switch open for a bit between readings to let it cool down