What happens to resistance when length of wire is doubled
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Explanation:
Resistance increases with length because the electrons have further to go, so suffer greater collisions with atoms in the material. Look at these wires: Electrons moving through the short wire only feel resistance for a short time compared to the longer one. This means its resistance is less.
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1
Answer:
we have
R= rho*l/A
when the length of wire doubled
R1=rho*2l/A
R1=2R
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