Question: Q. 5. (i) Define electric flux. Write its S.I. unit.
(ii) Using ‘Gauss’s law, prove that the electric field at a point due to a uniformly charged infinite plane sheet is independent of the distance from it.
(iii) How is the field directed if (i) the sheet is positively charged, (ii) negatively charged ?
R [Delhi I, II, III 2012]
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Solution:
Ans. (i) Try yourself, Similar to Q. 2, Very Short Answer Type Questions
(ii) Try yourself, Similar to Q. 7, Short Answer Type Questions-II
(iii) For positively charged sheet, the field is directed away from the sheet.
For negatively charged sheet, the field is directed towards the plane sheet.
[CBSE Marking Scheme, 2012]
