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1. |
It is observed that N number of field lines come out perpendicularly from the unit surface area of the sphere. What is the amount of charge inside the sphere? is the dielectric constant of the medium. |
A. | -4 R<sup>2</sup> N |
B. | 4 R<sup>2</sup> N |
C. | ( frac {4 pi R^2}{N epsilon} ) |
D. | ( frac {4 pi R^2N}{ epsilon} ) |
Answer» C. ( frac {4 pi R^2}{N epsilon} ) | |