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Question

Consider two concentric spherical metal shells of radii r1 and r2(r2>r1). If the outer shell has a charge q and the inner one is grounded, the charge on the inner shell is :
  1. Zero
  2. r1r2q
  3. r2r1q
  4. q

A
Zero
B
r1r2q
C
q
D
r2r1q
Solution
Verified by Toppr

Let, the change on the inner shell be q
Since the shell is grounded net electric potential will be zero.
So, kqr1+kqr2=0 (r2>r1)
q=Kqr2Kr1
q=(r1r2)q

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