NEET Solved Paper 2019 Question 13
Question: A hollow metal sphere of radius R is uniformly charged. The electric field due to the sphere at a distance r from the centre: [NEET 5-5-2019]
Options:
A) Zero as r increases for r < R, increases as r increases for r > R
B) Decreases as r increases for r < R and for r > R
C) Increases as r increases for r < R and for r > R
D) Zero as r increases for r < R, decreases as r increases for r > R
Show Answer
Answer:
Correct Answer: D
Solution:
- $ E _{inside}=0 $ $ E _{surface}=\frac{kQ}{R^{2}}=\max . $ $ E _{outside}=\frac{kQ}{r^{2}} $ $ E\propto \frac{1}{r^{2}} $
