Resistance of a wire How does changing the length of wire affect the resistance
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Resistance of a Wire
How does changing the length of wire affect the resistance?
Prediction
I think as the length of the wire increases the resistance increases. This is because there are more atoms for the electrons to collide into which slows down the flow of electrons
I think that as I double the length of wire the resistance will double because there are twice as many atoms to slow down the flow of electrons.
Length (cm) Resistance (ohms)
5 0.5
50 3.5
100 6.8
This table is from an experiment using Nichrome wire with a 0.5mm diameter. It shows that the resistance doubles when the length of wire doubles because there are twice as many atoms that will slow down the flow of electrons in the wire.
Variables
Type/Material of wire
Diameter of wire
Length of wire
Current
Voltage What To Do
Change the length of wire
Measure voltage across the wire at 0...