In Millikan's oil drop experiment an oil drop carrying a charge Q is held stationary by a potential difference 
between the plates. To keep a drop of half the radius stationary the potential difference had to be made 
. What is the charge on the second drop
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
In balance condition
⇒ ⇒ 
⇒ ⇒ 
⇒ ⇒ 
⇒ ⇒ 
⇒ ⇒ 
⇒ ⇒ Q 2 = Q / 2
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems
A charge q is placed at the center of the line joining two equal charges Q. The system of the three…
Inside a hollow charged spherical conductor, the potential
Two small spheres each carrying a charge q are placed r meter apart. If one of the spheres is taken…
The electric charge in uniform motion produces
Two charged spheres of radii 10 cm and 15 cm are connected by a thin wire. No current will flow, if…
The electric field inside a spherical shell of uniform surface charge density is