Question

Two charge placed in air at a distance 1m exert forces'f' on each other. If these charge placed inside mica at same distance then the new net force between charge is

Answer 1

Explanation:

since electrostatic force is indipendent of the mica...

Answer 2

Answer:

The net force between the charges, when the mica is placed is less than the initial force, f.

Explanation:

The electrostatic force is between the two charges when they are separated by the distance r and ∈ is in a medium of dielectric constant.

The electrostatic force also depends on the medium and if the charges are placed in a new medium, they are divided by the dielectric constant of the medium.

So, as here the medium is changed, the mica is placed inside the charges. The initial electric force will be divided by the dielectric constant of mica, which is between 3 to 6, which results in a decrease in the net force.

Hence, we can say that the net force is deceased when the mica is inserted in the middle of the charges.

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