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MHT CET202314 May 2023Morning ShiftPhysicsElectrostaticsActual

A uniformly charged semicircular arc of radius ' r ' has linear charge density ' '. The electric field at its centre is ( ₀= . permittivity of free space)

Options

  1. A4 ₀
  2. B2 ₀
  3. C4 ₀ r
  4. D2 ₀

Correct answer

C. 4 ₀ r

Step-by-step solution

aligned & = q l q & = l= r aligned The electric field at its centre is, aligned & E = q 4 ₀ r ^2 = r 4 ₀ r ^2 & E = 4 ₀ r aligned

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