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Question

A non conducting semicircular disc (as shown in figure) has a uniform surface charge density σ. The electric potential at the centre of the disc:-
1115270_e1d6a8d29f7640d08f9689dbd8a7cf54.png
  1. σ ιn(b/a)2π ε0 (ba)
  2. σ(ba)2 ε0
  3. σ(ba)4 ε0
  4. σ(ba)4π ε0

A
σ(ba)4 ε0
B
σ(ba)4π ε0
C
σ(ba)2 ε0
D
σ ιn(b/a)2π ε0 (ba)
Solution
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