Electrostatics Question 79
Question: An air capacitor of capacity $ C=10\mu F $ is connected to a constant voltage battery of$ 12V $ . Now the space between the plates is filled with a liquid of dielectric constant 5. The charge that flows now from battery to the capacitor is [MP PMT 1997]
Options:
A) $ 120\mu C $
B) $ 699\mu C $
C) $ 480\mu C $
D) $ 24\mu C $
Show Answer
Answer:
Correct Answer: C
Solution:
Initially charge on the capacitor $ Q=10\times 12=120\mu C $
Finally charge on the capacitor $ Q’=(5\times 10)\times 12=600\mu C $
So charge supplied by the battery later $ =Q’-Q=480\mu C $
