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A charged particle is suspended at the centre of two thin concentric spherical charged shells, made of non conducting material. Figure A shows cross section of
\( \mathrm{P} \) the arrangement. Figure \( \mathrm{B} \) gives the net flux \( \phi \) through

W a Gaussian sphere centered on the particle, as a function of the radius \( r \) of the sphere.

In which range of the values of \( r \) is the electric field zero?
(A) 0 to \( r_{A} \)
(B) \( r_{A} \) to \( r_{B} \)
(C) For \( rr_{B} \)
(D) For no range of \( r \), electric field is zero.
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