Question

Body A with charge +2q is brought in contact with anothef identical uncharged body B and then removed. The charge on body B is​

Answer 1

Answer:

A and B are two identical spherical charged bodies which repel each other with force =F

finite distance =

From the figure again, you can see C is placed at

2

r

. Now see the direction of force due to A on C.

F

AC

and force due to B on C F

BC

from simple coulomb's law you can answer as follows

F

AC

=

y

r

2

KQ.Q/2

=

r

2

2KQ

2

=2F

Now, F

BC

=

r

2

/4

K

Q

2

/4

=

r

2

KQ

2

=F

Then, resultant force according to diagram will be

F

resultant

=2F−F=F along F

A0

solution