Answer:
E=6.91 N/C
Step-by-step explanation:
Given that
Linear Charge density ,λ = 5 nC/m
Distance ,R= 13 m
We know that formula for long wire to find electric field

E=Electric field
R=Distance
εo=8.85 x 10⁻¹² C²/N.m²
λ=Linear Charge density
Now by putting the values

E=6.91 N/C
Therefore the electric filed at distance 13 m will be 6.91 N/C