Electronics and Communication Engineering - Exam Questions Papers - Discussion
Discussion Forum : Exam Questions Papers - Exam Paper 12 (Q.No. 2)
2.
Calculate the electrostatic force of repulsion between two mica particles at a distance of 10-13 m from each other. Charge on a particle is 3.2 x 10-19 C. (relative permittivity for mica is 5)
Answer: Option
Explanation:
By Coulomb's law:
Electrostatic force =
= 
= 18.43 x 10- 3 N.
Discussion:
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