Verified Solution • 2025–26 Session
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QNEET-2019-Ph-827: NEET 2019 Physics - Class 12 NEET-2019-Ph-827 Solution: A hollow metal sphere of radius R is uniformly charged. The…
A hollow metal sphere of radius R is uniformly charged. The electric field due to the sphere at a distance r from the centre: zero as r increases for r < R decreases as r increases for r > R zero as r increases for r < R increases as r increases for r > R. decreases as r increases for r < R and for r > R. increases as r increases for r < R and for r > R.
Multiple Choice Options
- A zero as r increases for r < R, decreases as r increases for r > R
- B zero as r increases for r < R, increases as r increases for r > R.
- C decreases as r increases for r < R and for r > R.
- D increases as r increases for r < R and for r > R.
Step-by-Step Verified Solution
For inside (r < R)
Apply, Gauss law,
_ E i n . d S _ = q e n _ 0
_ E in = 0 [ As q en = 0 ]
For outside (r > R)
_ E _ o u t . d S _ = q e n _ 0
Here, q en = Q
So, E out .4 � r 2 = Q _ 0
_ E out _ 1 r 2