A cube of side L has point charges +q located at its seven vertices and -q at remsing one vertex. The electric field at its centre is found to be 
. The magnitude of constant α is
A
B
C
3
D
1
Text Solution
Verified by ExpertsThe correct answer is:
B
Replace -q by " +q and 
as shown
Clearly, net electric field due to +q will be zero
Clearly, 
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 uniformly charged conducting sphere of diameter has a surface charge density of . The charge on…
Among the following the charge that does not exist on any type of charged body is
A charge Q is to be divided between two objects. The values of the charges on the objects so that t…
A solid sphere of radius R carries a positive charge Q distributed uniformly throughout its volume.…
An electron is released from a distance of 4 m from a stationary point charge . What will be the s…
Two charges are and are separated by . The magnitude of force acting on another charge placed a…