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Essay Details:
Essay text:
The current is the flow of electrons; the current is dependent on the amount of voltage, which is applied. Voltage is the push given to the current. The current has to go through a circuit, which contains resistance so if you increase that push you also increase the flow of the current. All materials have a slight resistance to electricity factors affecting the resistance are: Length, Voltage & Temperature and Surface Area.
Preliminary Work
Changing only the length of the wire
Length Voltage (V) Current (A) Resistance (?)
Short 5.45 0.26 20.96
Long 5.56 0.24 23.16
Longest 5.58 0.19 29.36
Conclusion: the longer the wire, the higher the resistance
Changing only the cross section area of the wire
Thickness Voltage (V) Current (A) Resistance (?)
Single 4...
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Common topics in this essay:
- current and resistance of a wire and the affects when the length changes
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