Answer:
force = 3 N
Explanation:
To find the force of the test charge of 0.001 C, we can use this formula:
[tex]\boxed{F=\frac{Vq}{d} }[/tex]
where:
Given:
Therefore:
[tex]\displaystyle F=\frac{Vq}{d}[/tex]
[tex]\displaystyle F=\frac{12\times0.001}{0.004}[/tex]
[tex]\bf F=3\ N[/tex]