If increased in lenght of wire by 0.5 what happens to its resistance
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It's resistance is increase because resistance is directly proportional to length of conductor or wire
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Resistance is given by the formula, R=¶*L/a .
Where, ¶ is resistance coefficient or resistivity.
L is length and a is cross section area of conductor.
Now if you increase length of the conductor, it is bound to decrease cross section area i.e of length of increased by 0.5% then radius decreases by 0.5% . This will affect resistance as follows.
R'=¶*L(1+1.005)/(π(r(1+1.005))^2)
627
Where, ¶ is resistance coefficient or resistivity.
L is length and a is cross section area of conductor.
Now if you increase length of the conductor, it is bound to decrease cross section area i.e of length of increased by 0.5% then radius decreases by 0.5% . This will affect resistance as follows.
R'=¶*L(1+1.005)/(π(r(1+1.005))^2)
627
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