Electrostatics Question 430
Question: A spherical conductor of radius 2m is charged to a potential of 120 V. It is now placed inside another hollow spherical conductor of radius 6m. Calculate the potential to which the bigger sphere would be raised [KCET 2001]
Options:
A) 20 V
B) 60 V
C) 80 V
D) 40 V
Show Answer
Answer:
Correct Answer: D
Solution:
If charge acquired by the smaller sphere is Q then it’s potential $ 120=\frac{kQ}{2} $ ….. (i) Also potential of the outer sphere $ V=\frac{kQ}{6} $ …..(ii) From equation (i) and (ii) V = 40 volt
