Question

the force between+1micro C and +1 mC charges which kept at a distance 1m is 9N in the vacuum.but if the same two charges kept inside the coconut oil,the force is 3.180N.whats the dielectric constant

Answer 1

Given:

The force between+1micro C and +1 mC charges which kept at a distance 1m is 9N in the vacuum. But if the same two charges kept inside the coconut oil,the force is 3.180N.

To find:

What is the dielectric constant?

Solution:

From the given information, we have the data as follows.

The force between+1micro C and +1 mC charges which kept at a distance 1m is 9N in the vacuum. But if the same two charges kept inside the coconut oil,the force is 3.180N.

⇒ f = 9 N

⇒ f_m = 3.18 N

The dieletric constant in terms of the ratio of forces is given as follows.

k = f_m/f

k = 3.18/9

k = 0.35

Therefore, the dielectric constant is 0.35.