The presence of a dielectric between two charged particles:
Correct answer: A. Reduces the electrostatic force
- A. Reduces the electrostatic force
- B. Increases the electrostatic force
- C. Does not change electrostatic force
- D. Doubles the electrostatic force
Explanation
Fvacum = 1/4πϵ0 × q1q2/r In presence of dielectricFmedium = 11/4πϵ0ϵr × q1q2/rFmedium= Fvacum/ ϵrThis clearly shows that by putting dielectric between particles reduces the forceWhen a dielectric material is placed between two charged particles, it reduces the electrostatic force between them. The presence of the dielectric material polarizes the atoms or molecules within the dielectric, which weakens the electric field between the charged particles and results in a reduction of the electrostatic force
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About Coulomb's Law
Coulomb's law gives the electrostatic force between two point charges in terms of their magnitudes, separation and the medium between them. Questions involve attraction and repulsion, the inverse square relationship, superposition of forces and vector direction, which must not be confused with the electric field produced by a charge.
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