CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon
MyQuestionIcon
Question

In Millikan’s oil drop experiment, an oil drop of radius r and charge Q is held in equilibrium between the plates of a charged parallel plate capacitor when the potential difference is V. To keep a drop of radius 2r and charge 2Q in equilibrium between the plates ,the potential difference required will be

A
8V
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
4V
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
2V
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
1V
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is B 4V
Use Force balance
4/3*pi*r^3*d*g=Q*V/l.
l is distance between plates.

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Intensity vs Photocurrent
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon