Electrostatics Question 275
Question: In the given circuit if point C is connected to the earth and a potential of
Options:
A) 3 : 1
B) 5 : 1
C) 3 : 5
D) 5 : 3
Show Answer
Answer:
Correct Answer: C
Solution:
Initially potential difference across both the capacitor is same hence energy of the system is
In the second case when key K is opened and dielectric medium is filled between the plates, capacitance of both the capacitors becomes 3C, while potential difference across A is V and potential difference across B is
hence energy of the system now is
