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An infinite plane metallic sheet having surface charge density ‘ ’ is placed in vacuum. P is a…
An infinite plane metallic sheet having surface charge density ‘$+\sigma$’ is placed in vacuum. P is a point at a small distance ‘$r$’ to its right.
(i)
Write an expression for intensity of electric field at point P.
(ii)
Now, an identical charged sheet having surface charge density ‘$-\sigma$’ is placed parallel to the first sheet such that the point P is to its left at the same distance ‘$r$’. (The point P lies between the two plates.)
(a) What is the resultant intensity of electric field at point P?
(b) What is its direction?
Answer
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From ISC 2025 Physics Paper 1, question 9.