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2 years ago

Two objects have unlike charges. How would the electric force between the two objects change as they are moved apart?

Physics

2 answers:

Katarina [22]2 years ago

7 0

Answer:

as we move the two charges apart the attraction force between them will decrease in magnitude

Explanation:

As we know that two charges are unlike charges here so the force between them is attraction type of force

This force is given by Coulomb's law which is given as

$F = \frac{kq_1q_2}{r^2}$

so here this force is proportional to the product of two charges and inversely depends on the square of the distance between two charges

So here keeping the same magnitude of the charges we move them to large distance

So here the force between them must have decrease

So as we move the two charges apart the attraction force between them will decrease in magnitude

Karolina [17]2 years ago

4 0

Opposite charges repeal

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Answer:

$\theta =\left (\frac{kq^{2}}{4L^{2}\times mg} \right )^{\frac{1}{3}}$

Explanation:

Let the length of the string is L.

Let T be the tension in the string.

Resolve the components of T.

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T Sinθ = Fe ..... (1)

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Divide equation (1) by equation (2), we get

tan θ = Fe / mg

$tan\theta =\frac{\frac{kq^{2}}{AB^{2}}}{mg}$

$tan\theta =\frac{\frac{kq^{2}}{4L^{2}Sin^{\theta }}}}{mg}$

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As θ is very small, so tanθ and Sinθ is equal to θ.

$\theta ^{3} =\frac{kq^{2}}{4L^{2}\times mg}$

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