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2. Electric potential and capacitance — Physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 SciencePhysics2. Electric potential and capacitance1 Mark
MCQ
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.
  • B
    If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.
  • C
    If Assertion is correct but Reason is incorrect.
  • D
    If both the Assertion and Reason are incorrect.
✓

Answer

Correct option: A.
If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
a
$\mathrm{V}_{\mathrm{A}}=\frac{1}{4 \pi \varepsilon_{0}} \frac{Q_{1}+Q_{2}}{R_{2}}$

$\mathrm{V}_{\mathrm{B}}=\frac{1}{4 \pi \varepsilon_{0}}\left(\frac{Q_{1}}{R_{1}}+\frac{Q_{2}}{R_{2}}\right)$

$\mathrm{V}_{\mathrm{B}}-\mathrm{V}_{\mathrm{A}}=\frac{1}{4 \pi \varepsilon_{0}} Q_{1}\left(\frac{1}{R_{1}}-\frac{1}{R_{2}}\right)$

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