how does the resistance of wire change
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resistance depends on some factors which are
(1) length
(2) area of cross section
(3) nature of the material
(4) temperature
as resistance is directly proportional to length so, if we increase the length of the wire the resistance will increase and if we decrease the length of the wire the resistance will decrease
* resistance is inversely proportional to the area of cross section as if we increases area of cross section resistance of the wire will decrease and if we decrease area of cross section resistance of the wire will increase
* nature is as like if the material has high resistivity the resistance will also high
* resistance Is directly proportional to temperature on increasing temperature resistance increase in decreasing temperature resistance decrease......
(1) length
(2) area of cross section
(3) nature of the material
(4) temperature
as resistance is directly proportional to length so, if we increase the length of the wire the resistance will increase and if we decrease the length of the wire the resistance will decrease
* resistance is inversely proportional to the area of cross section as if we increases area of cross section resistance of the wire will decrease and if we decrease area of cross section resistance of the wire will increase
* nature is as like if the material has high resistivity the resistance will also high
* resistance Is directly proportional to temperature on increasing temperature resistance increase in decreasing temperature resistance decrease......
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The resistance of a wire is directly proportional to its length and inversely proportional to its area.If the material is changed to one whose resistivity is three times then again its resistance will be three times
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