Question

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Intensity of electric field at a perpendicular distance of 0.5 mfrom an
infinite long linear charge having a linear charge density is 3.6 x 103
V/m. Find the value of linear charge density
0.4 micro C/m
0.04 micro C/m
40 micro C/m
4 micro C/m​

Answer 1

Answer:

Electric filed at a distance r from an infinitely long line charge is given by E=

2πϵ

o

r

λ

⟹ λ=2πϵ

o

rE

Given : d=0.5m, E=3.6×10

3

Vm

−1

∴ λ=2π(8.85×10

−12

)(0.5)(3.6×10

3

)= 10

−7

C/m