\( \begin{array}{ll}\text { Comprehension } & \text { : A charged particle is suspended }\end{ar...

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\( \begin{array}{ll}\text { Comprehension } & \text { : A charged particle is suspended }\end{array} \) at the center of two thin concentric spherical charged shells, made of non conducting material. Figure \( \mathrm{A} \) shows cross section of the arrangement. Figure B gives the net flux \( \phi \) through a Gaussian sphere centered on the particle, as a function of the radius \( r \) of the sphere.
Figure A
Figure B
What is the charge on the central particle?
(a) \( 0.2 \mu \mathrm{C} \)
(b) \( 2 \mu \mathrm{C} \)
(c) \( 1.77 \mu \mathrm{C} \)
(d) \( 3.4 \mu \mathrm{C} \)
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