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JEE Main 2019
10-01-2019 S1
Question
A charge Q is distributed over three concentric spherical shells of radii a, b, c (a < b < c) such that their surface charge densities are equal to one another. The total potential at a point at distance r from their common Centre, where r < a, would be
Select the correct option:
A
$\frac{Q(a+b+c)}{4 \pi \epsilon_0\left(a^2+b^2+c^2\right)}$
B
$\frac{Q}{4 \pi \epsilon_0(a+b+c)}$
C
$\frac{Q\left(a^2+b^2+c^2\right)}{4 \pi \epsilon_0\left(a^3+b^3+c^3\right)}$
D
$\frac{Q}{12 \pi \epsilon_0} \frac{a b+b c+c a}{a b c}$
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
Solution
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Question Tags
JEE Main
Physics
Medium
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