How is resistance affected if length of conductor is tripled and thickness is made one-third
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as resistance , R1 = ρl/A
where, ρ = resistivity
l = length of conductor
A = area of cross-section
Effect on resistance , R2 = ρ 3l/(A/3) = 6ρl/A = 6 R1
hence, resistance becomes 6 times the original value
where, ρ = resistivity
l = length of conductor
A = area of cross-section
Effect on resistance , R2 = ρ 3l/(A/3) = 6ρl/A = 6 R1
hence, resistance becomes 6 times the original value
varandeepsahota:
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right answer.
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