Question

An infinite linear charge at 2 cm distance produces an electric field of 9 × 10⁴ N/C. Determine the linear charge density.

Answer 1

Electric field intensity due to linear charge of infinite extension
E = \(\frac{1}{4 \pi \varepsilon_{0}} \frac{2 \lambda}{r}\)
Where, λ is linear charge density and r is distance of observation point from charge. According to question,