-
If a copper wire is increased to double its length, its resistance will become
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- four times
- one–fourth
- double
- half
- four times
Correct Option: C
There is a direct relationship between the amount of resistance encountered by charge and the length of wire it must traverse. After all, if resistance occurs as the result of collisions between charge carriers and the atoms of the wire, then there is likely to be more collisions in a longer wire. An object of uniform cross section has a resistance proportional to its resistivity and length and inversely proportional to its cross-sectional area.
