Question

Two 2.0-cm-diameter insulating spheres have a 6.10 cm space between them. One sphere is charged to + 22.0 nC , the other to - 37.0 nC . What is the electric field strength at the midpoint between the two spheres?

Answer #1

Solution;

diameter ,d= 2 cm

Distance between two space = 6.10 cm

Mid point from both sides distance , r

Now two charges are

Case 1:

The electric field from q_{1} charge at mid point
is

And the electric field from q_{2} charge at mid
point is

This sign means the electric field is positive to negative

The total electric field is E,￼

ANSWER = 323731 N

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