plot a graph of resistance against length for the resistance wireįrom the graph it can be seen that the longer the piece of wire, the greater the resistance, and that resistance is directly proportional to length as the graph gives a straight line through the origin.use the results to calculate the resistance of each length of wire by using \(R = V/I\), where R is resistance, V is potential difference and I is current.When the crocodile clips are not connected the circuit is open (OFF). The red terminal is connected to the internal pin of. A Crocodile clip lead is normally used attached to a home-made or commercial push to.
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