Question
Physics Question on Electrostatics
When a slab of insulating material 4 mm thick is introduced between the plates of a parallel plate capacitor of separation 4 mm, it is found that the distance between the plates has to be increased by 3.2 mm to restore the capacity to its original value. The dielectric constant of the material is______.
Fill in the blank with the correct answer from the options given below.
A
2
B
5
C
3
D
7
Answer
5
Explanation
Solution
The dielectric constant of the material is calculated as 5 based on the change in separation needed to restore the capacitance. Hence, the correct answer is Option 2.