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NEET2019PhysicsElectrostaticsActual

Two parallel infinite line charges with linear charge densities + λ   C   m - 1 and - λ   C   m - 1 are placed at a distance of 2 R in free space. What is the electric field mid-way between the two-line charges?

Options

  1. Azero
  2. B2 λ π ϵ 0   R   N   C - 1
  3. Cλ π ϵ 0   R   N   C - 1
  4. Dλ 2 π ϵ 0   R   N   C - 1

Correct answer

C. λ π ϵ 0   R   N   C - 1

Step-by-step solution

E 1 = λ 2 π ε 0 R E 2 = λ 2 π ε 0 R E net = E 1 + E 2 = λ π ε 0 R   N   C - 1

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