Answer :
The magnitude of the charge on each sphere Q = 0.82 * 10-7 C
What is electrostatic force?
Electrostatics is the study of electric charges while they are at rest. Since ancient times, it has been known that some materials, like amber, may catch light particles after being rubbed. Therefore, the Greek word for amber is the source of the term "electricity."
Let the charge on each of them be "Q".
By Columb's law,
F = q1 ×q2 / ( 4π€0 × r^2)
where q1,q2 = charge on them
r = distance between the charges
1/4π€0 = constant
Now, electrostatic force of attraction on each of them = (1/4πε)(Q2/0.022)
Also, this force is being acted on each of the spheres,
hence, (1/4πε)(Q2/0.022)
= M*a 9 * 109 * Q2 * 104 / 4
= 10-3 * 150 Q
= 0.82 * 10-7 C
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