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Circuit : R vs L for length of a metal wire
Graph: R vs L for length of a metal wire
The graph is a straight line through the origin ie. the resistance of the wire is directly proportional to the length.
short wire:
As the electrons in the current pass through the wire, they collide with each other and with the ions in the metallic lattice.
long wire:
The longer the wire, the more ions there are for the electrons to collide with, hence more resistance.
