... resistance is. The thing in the conductor that resists the current going through it easily is the atoms in the conductor. If the wire is longer then there are more atoms to knock pass so there is more resistance against the electrons going through the wire. Therefore the resistance of the wire increases as the length does. Method I will set up a circuit with an ammeter and a voltmeter, keeping the current constant and measuring the voltage of the wire, we can work out the resistance as the length increases. The circuit was set up like below. I will use the variable resistor to keep the current at 0.5 A because every time the length of the wire is increased the current has to be changed to 0.5 A. I have kept the current constant for the ease of the calculations when working out the resistance. I am going to measure ...

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