If a wire is stretched such that radius becomes half find new resistance
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Let the new radius be x
THEN, Old radius =2x
Old area =22/7*2x^2
New area=22/7*x^2
Old circumference= 2*22/7*2x
New circumference=2*22/7*x
Now I hope you will be able to find resistance.
THEN, Old radius =2x
Old area =22/7*2x^2
New area=22/7*x^2
Old circumference= 2*22/7*2x
New circumference=2*22/7*x
Now I hope you will be able to find resistance.
Answered by
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resistance is
new radius.... x
old radius......2x
old area.....22/7*2x^2
new area....22/7*x^2
old circumferance.......2*22/7*2x
new circumferance......2*22/7*x
new radius.... x
old radius......2x
old area.....22/7*2x^2
new area....22/7*x^2
old circumferance.......2*22/7*2x
new circumferance......2*22/7*x
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