Question

39 The charges q1, 92,q3, with respective value 25 C, -10microC, + 20 uC are placed as shown in the following figure. The resultant force on the charge q3will be: F
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Answer 1

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Answer 2

Like charges repel each other while unlike charges attract each other. If the charges are at rest then the force between them is known as the electrostatic force. The electrostatic force between charges increases when the magnitude of the charges increases or the distance between the charges decreases.

Explanation:

The formula of the  coulomb's law,

$F=k$×$q1$×$q2$$/r^2$

Here, The symbol k is a proportionality constant known as the Coulomb's law constant. The value of this constant is dependent upon the medium that the charged objects are immersed in. ... While the charge is uniformly spread across the surface of the sphere, the center of charge can be considered to be the center of the sphere.

Given:

$q1 = 25c\\q2 = -10c\\q3 = 20c$

$r^2$= $1/25$×$-10$×$20$

The resultant force on the charge  will be $3.08$