1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

# Two parallel plate capacitors of capacitances C and 2C are connected in parallel and charged to a potential difference V. The battery is then disconnected, and the region between the plates of C is filled completely with a material of dielectric constant K. The common potential difference across the combination becomes :

A
2VK+2
No worries! Weâ€˜ve got your back. Try BYJUâ€˜S free classes today!
B
VK+1
No worries! Weâ€˜ve got your back. Try BYJUâ€˜S free classes today!
C
3VK+3
No worries! Weâ€˜ve got your back. Try BYJUâ€˜S free classes today!
D
3VK+2
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
Open in App
Solution

## The correct option is D 3VK+2Initially both capacitors are at potential V.Charge on both plates are CV and 2CV.When we put dielectric between the plates of C,C′=KCCommon potential, VC=Q1+Q2C1+C2=CV+2CVKC+2C=3VK+2

Suggest Corrections
0
Join BYJU'S Learning Program
Related Videos
Capacitance of a Parallel Plate Capacitor
PHYSICS
Watch in App
Join BYJU'S Learning Program