Question

An air capacitor of capacity $C=10\mu F$ is connected to a constant voltage battery of $12\text{V}$. Now the space between the plates is filled with a liquid of dielectric constant $5$. The excess charge that flows now from battery to the capacitor is

• A. $120\mu C$
• B. $600\mu C$
• C. $480\mu C$
• D. $240\mu C$

Answer 1

The correct option is C $480\mu C$

Charge that flows from battery to capacitor
$=(K-1)\text{CV}$
$=(5-1)10\times 12\mu C=480\mu C$