Resistance of wire R = ρ l/A
Where A is the cross-sectional area of the conductor
L is the length of the conductor
ρ is the specific resistance
RA = ρl/π(10-3 × 0.5)2
RB = ρl/ π[10-3)2 × (0.5 × 10-3)2]
Therefore, the ratio is RA/RB = 3:1
Resistance of wire R = ρ l/A
Where A is the cross-sectional area of the conductor
L is the length of the conductor
ρ is the specific resistance
RA = ρl/π(10-3 × 0.5)2
RB = ρl/ π[10-3)2 × (0.5 × 10-3)2]
Therefore, the ratio is RA/RB = 3:1