Electric Charges and Field Problems - Numerical 03

 

Suggested answer:

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Let F₁ be the magnitude of the force with which charge q₂ is attracted towards q₁.

We know that

If F₂ is the magnitude of the force with which charge q₂ is attracted towards q₃, then

Net force F experienced by q₂ is directed towards q₁ and is given by

F = F₁ - F₂ = (0.0450 - 0.0169)N

= 0.0281N

Note:

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The signs of the charges are not employed in the use of Coulomb's law because these are implicit in the direction of the forces.