+91-87964 74404
FlagBACK
Question icon
Grade 11Electrostatics

In the figure magnitude of force experienced by Q is

Question image for In the figure magnitude of force experienced by Q
Profile image of Khaleel khan
8 Years agoGrade 11
Answers icon

1 Answer

Profile image of Ankush
8 Years ago
As it's a symmetrical figure, let's consider the diagonals. 
On the diagonal with 4q and 2q, Q is repelled towards 2q, with a force equal to F = K4Qq/r^2 -K2Qq/r^2
=K2Qq/r^2
 
Here, r can be found using Pythagorean theorum, which is a/√2.
 
Similarly, on other diagonal, we have a repulsion towards q.
With a force of K2Qq/r^2.
 
Now, since they are equal forces with a 90 degree angle in between, we can simply use the result from addition of vectors.
It'll be equal to F√2
 
So, finally, magnitude will be equal to 
 
4√2*( KQq/a^2).
:)

Other Related Questions on electrostatics

question mark
Electrostatics question based on earthing of spherical shell
electrostatics
1 Answer Available

Last Activity: 3 Years ago

question mark
an object has a charge of 2c and gains 10^19 electrons. the net chaarge on the object becomes??
electrostatics
1 Answer Available

Last Activity: 4 Years ago

question mark
A wire with a linear charge density lambda forms a quarter of a cjrclenof radius R and is placed asa shown in thefigure with its centre of curvature at the origin O the electric field at O will be
electrostatics
1 Answer Available

Last Activity: 4 Years ago

question mark
Find the value of q so that system remains in equilibrium.. figure attached below
electrostatics
1 Answer Available

Last Activity: 4 Years ago

question mark
Need to find the time taken for the dipole to come back to eqm
 
electrostatics
1 Answer Available

Last Activity: 4 Years ago