NEET2020PhysicsCapacitanceActual
The capacitance of a parallel plate capacitor with air as medium is 6   μ F . With the introduction of a dielectric medium, the capacitance becomes 30   μ F . The permittivity of the medium is: ε 0 = 8.85 × 10 − 12   C 2   N − 1   m − 2
Options
- A1.77 × 10 − 12   C 2   N − 1   m − 2
- B0.44 × 10 − 10   C 2   N − 1   m − 2
- C5.00   C 2   N − 1   m − 2
- D0.44 × 10 − 13   C 2   N − 1   m − 2
Correct answer
B. 0.44 × 10 − 10   C 2   N − 1   m − 2
Step-by-step solution
C m = ∈ r C 0 ∈ r = 30 6 = 5 ∈ = ∈ 0 . ∈ r = 8 . 85 × 10 − 12 × 5 ∈ = 0 . 44 × 10 − 10