Conductor Investigation
Science February 6 2009 - February 19 2009
Conductor Investigation Calvin Chang 8.2 Stage 1: Planning the Experiment Introduction ! By “electric current”, I mean by the rate at which electric charges moves through a circuit, the electric charges can either be ions or electrons. They are measured in ammeters and the unit that is measured in is ampere which is the number of charges that passes through per second. There are many factors which would affect the electric current, like the voltage of the battery, the type of wire you are using, how long the circuit is, the thickness of the wires, the number of battery, the kind of load, the shape of the wire, the quality of the wire, the temperature of the wire... and many other factors, but the factor that I am going to investigate is: if the length of the circuit have affect on the electric current. Aim ! By doing this investigation, I am going to find out if the length of the circuit affect the electric current, and by how much. Hypothesis ! I think that the length of the circuit WILL have affect on the electric current, because it takes time for the electric to run through the wires and while running through the wires some electric would be wasted. But I cannot give a guess on how much the affect would be, because we need to find that out in the experiment. Apparatus ! Ten Conducting wires, one battery, one circuit diagram, one circuit board, one ammeter, one 1 meter long nychrome wire, one ruler, and five alligator clips. Method ! First of all, get all the equipments, then, put the battery in the circuit board. And then connect 2 conducting wires to the circuit board and put an ammeter in between the 2 conducting wires and read the measurements, after reading the measurements record it. Do the same thing as above but add 1 more conducting wire in between 1 conducting wire and the ammeter and connect that conducting wire to the first conducting wire with an alligator clip and read the measurements then record it. Add
Conductor Investigation Calvin Chang 8.2 Stage 1: Planning the Experiment Introduction ! By “electric current”, I mean by the rate at which electric charges moves through a circuit, the electric charges can either be ions or electrons. They are measured in ammeters and the unit that is measured in is ampere which is the number of charges that passes through per second. There are many factors which would affect the electric current, like the voltage of the battery, the type of wire you are using, how long the circuit is, the thickness of the wires, the number of battery, the kind of load, the shape of the wire, the quality of the wire, the temperature of the wire... and many other factors, but the factor that I am going to investigate is: if the length of the circuit have affect on the electric current. Aim ! By doing this investigation, I am going to find out if the length of the circuit affect the electric current, and by how much. Hypothesis ! I think that the length of the circuit WILL have affect on the electric current, because it takes time for the electric to run through the wires and while running through the wires some electric would be wasted. But I cannot give a guess on how much the affect would be, because we need to find that out in the experiment. Apparatus ! Ten Conducting wires, one battery, one circuit diagram, one circuit board, one ammeter, one 1 meter long nychrome wire, one ruler, and five alligator clips. Method ! First of all, get all the equipments, then, put the battery in the circuit board. And then connect 2 conducting wires to the circuit board and put an ammeter in between the 2 conducting wires and read the measurements, after reading the measurements record it. Do the same thing as above but add 1 more conducting wire in between 1 conducting wire and the ammeter and connect that conducting wire to the first conducting wire with an alligator clip and read the measurements then record it. Add