Q.Two concentric spherical shells have radii a and b (b > a). The inner shell has charge +Q and outer -Q. The potential difference between inner and outer shell is

\dfrac{Q}{4\pi \epsilon_0} \left( \dfrac{1}{a} - \dfrac{1}{b} \right)

\dfrac{Q}{4\pi \epsilon_0} \left( \dfrac{1}{b} - \dfrac{1}{a} \right)

\dfrac{Q}{4\pi \epsilon_0 b}

zero

The correct solution involves applying the fundamental concept to derive the final value step by step...

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