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Assertion : Two concentric charged shells are given. The potential difference between the shells depends on charge of inner shell.
Reason : Potential due to charge of outer shell remains same at every point inside the sphere.
If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.
If Assertion is correct but Reason is incorrect.
If both the Assertion and Reason are incorrect.
Solution
$\mathrm{V}_{\mathrm{A}}=\frac{1}{4 \pi \varepsilon_{0}} \frac{Q_{1}+Q_{2}}{R_{2}}$
$\mathrm{V}_{\mathrm{B}}=\frac{1}{4 \pi \varepsilon_{0}}\left(\frac{Q_{1}}{R_{1}}+\frac{Q_{2}}{R_{2}}\right)$
$\mathrm{V}_{\mathrm{B}}-\mathrm{V}_{\mathrm{A}}=\frac{1}{4 \pi \varepsilon_{0}} Q_{1}\left(\frac{1}{R_{1}}-\frac{1}{R_{2}}\right)$
