ElectrostaticsHard
Question
A non-conducting solid sphere of radius R is uniformly charged. The magnitude of the electric field due to the sphere at a distance r from its centre.
Options
A.increases as r increases, for r ≤ R
B.decreases as r increases, for 0 < r < ∞ .
C.decreases as r increases, for R < r < ∞.
D.is discontinuous at r = R
Solution
(i) At any point P inside the sphere, electric field ⇒ EP = 
∴ EP increases as r increases
(ii) At any point M outside the sphere, EM =
∴ EM decreases as r increases.
∴ EP increases as r increases
(ii) At any point M outside the sphere, EM =
∴ EM decreases as r increases.
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