What is the dielectric content of the medium if the capacitance of a parallel plate capacitor increases from 40F to 80F on introducing a dielectric medium between the planes?
Correct answer: C. 2
- A. 20
- B. 0.5
- C. 2
- D. 5
Explanation
To find the dielectric constant (K), use the formula K = C with dielectric / C without dielectric.Given: C_without_dielectric = 40F and C_with_dielectric = 80F.Thus, K = 80F / 40F = 2.Option A is incorrect because a dielectric constant of 20 would imply a twentyfold increase in capacitance, which is not the case here.Option B is incorrect because a dielectric constant of 0.5 would actually decrease the capacitance, contrary to the given scenario.
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