NCERT Class XII Chapter
Electric Charges and Fields
Questions With Solutions
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Question : 24
Total: 34
Two large, thin metal plates are parallel and close to each other. On their inner faces, the plates have surface charge densities of opposite signs and of magnitudes 17.0 × 10 – 22 m – 2
(a) the outer region of the first plate.
(b) the outer region of the second plate, and
(c) between the plates?
(a) the outer region of the first plate.
(b) the outer region of the second plate, and
(c) between the plates?
Solution:
As both the plates have same surface charge density σ, so
E A E B
(a) In region-I,E 1 E B − E A
−
E 1
(b) In region-III,E I I I E A − E B
−
E m
(c) In region-II,E I I E A + E B
+
orE I I
10 − 10 C − 1
(a) In region-I,
(b) In region-III,
(c) In region-II,
or
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