Two wires are A and B of the same material and length l and 2l have radius r and 2r are respectively .the ratio of special resistance are
Answers
Answered by
0
1:1 as material is same.
Answered by
2
since resistance is directly proportional to the area (r^2) and inversely to length
=> ratio = (2r)^2/r^2 × l/2l
= 2:1
=> ratio = (2r)^2/r^2 × l/2l
= 2:1
Similar questions