Two concentric conducting spheres of radii r 1 and r 2 r 1

Question

Two concentric conducting spheres of radii $r_{1}$ and $r_{2} (r_{1} {< r}_{2})$ carry electric charges of $+ Q$ and $- Q$ respectively. The region between the sphere is filled with two insulating layers of dielectric constant $ε_{1}$ and $ε_{2}$ and width $d_{1}$ and $d_{2}$ respectively. Variation of the potential and electric field with radial distance from $O$ is given. Select the correct one. (assume $V$ at $r_{2} = 0$ )

TestHub · Accepted Answer

Electric field r < r 1 , E = 0 r 1 < r < r 1 + d, E = Q 4 πε 0 r 2 ε 1 r 1 + d < r < r 2 , E = Q 4 πε 0 ε 2 r 2 r > r 2 , E = 0 Potential can be find out by integrating i.e. V = - ∫ ∞ r E.dr = 0

Physics - Electrostatics Question with Solution | TestHub

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