Question

Can some one plz solve both the questions. ......




13. Two point-charges of 1.0 uC and -0.25 uC are placed
in air at a distance of 0.40 m from each other. Find
out at which point on the line joining the two charges
should a third charge be placed so that no force acts
upon it?

14. Two point-charges +9e and +e are placed at a
distance of 16 cm from each other. At what point
between these charges should a third charge q be
placed so that it remains in equilibrium?

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Answer 1

qanswer q1=1.o & q2 =-0.25 then d=0.40 then fromulla apply the answer