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1. First, 16 gauge copper wire is wrapped
around a pipe or highlighter pen with a
diameter of 1cm to make the coil and
the diameter of the copper coil is 1.3
cm.
2. Second, the train is made up of an AAA
battery and one N35 neodymium
magnet on each end of the battery. The
magnets need to be placed on the
battery with the poles facing opposite
directions.
3. The speed of the train in the coil is
observed and recorded.
4. The experiment is repeated with N45
neodymium magnet and N52
neodymium magnet.
From Ethan Lee
Jasper Ang
Lam Yi Phei
2A2
Manipulated variable:
the strength of magnet
Responding variable:
the speed of the train
Fixed variables:
the number of magnet used, the diameter of the copper wire used, the diameter of the coil used
To study the factors affecting
the speed of the
‘electromagnetic train’.
1. The experiment above is repeated with two,
three, four and five N52 neodymium magnets
on each end of the battery.
2. The speed of the train in the coil is observed
and recorded.
Manipulated variable:
the number of magnet used
Responding variable:
the speed of the train
Fixed variables:
the strength of magnet used, the diameter of the copper wire used, the diameter of the coil used
1. The experiment above is repeated with using
20 and 22 gauge copper wire.
2. The speed of the train in the coil is observed
and recorded.
Manipulated variable:
the diameter of the copper wire used
Responding variable:
the speed of the train
Fixed variables:
the strength of magnet, the number of magnet used, the diameter of the coil used
1. The experiment above is repeated with using a
16 gauge copper wire with a diameter of 1.6 cm
and 2.1 cm.
2. The speed of the train in the coil is observed a
Neodymium magnets are very popular. We wanted to carry out an activity to use the magnet. It is to build a simple electromagnetic train using magnet, battery and copper wire. The reality is: it was not as easy as we expected because the type of Neodymium magnets we used and the ones in the video are probably different. The diameter of the copper coil also influences the speed of the train. In other words, this experiment is not an easy task to accomplish because it requires a suitable type of Neodymium magnet and diameter of copper coil to make the train move smoothly.
we decided to study the factors that affect the speed of the ‘train’
• Copper Wire (16, 20, 22 gauge)
• AAA battery
• Neodymium magnets
(N35, N45 and N52)