Electrostatics 5 Question 25

27. Three infinitely long charge sheets are placed as shown in figure. The electric field at point P is

(2005, 1M)

(a) 2σε0k^

(b) 2σε0k^

(c) 4σε0k^

(d) 4σε0k^

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Solution:

  1. All the three plates will produce electric field at P along negative z-axis. Hence,

Ep=σ2ε0+2σ2ε0+σ2ε0(k^)=2σε0k^

Correct answer is (b).



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