Question

If on stretching a wire its radius decreases by 1% the resistancewill be

Answer 1

Explanation:

When all other variables are the same, charge will flow at higher rates through wider wires with greater cross-sectional areas than through thinner wires. In this case, the wire is stretched and the radius of the wire is decreased by 1%.

Answer 2

Answer:

4%

Explanation:

Points to be known :-

1] Resistivity is independent of

dimensions of the wire

2] R=pl/A where p is resistivity of

wire

3] ∆R/R= ∆l/l +∆A/A

Hope this answer helped you