Voltage rating of a parallel plate capacitor is 500 V.

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asked Sep 12 in Science by navnit40 (-4,766 points)

Voltage rating of a parallel plate capacitor is 500 V. Its dielectric can withstand a maximum electric field of 106 V/m. The plate area is 10–4 m2 . What is the dielectric constant if the capacitance is 15 pF ? (given ∈0 = 8.86 × 10–12C2 /Nm2

 (1) 6.2 

 (2) 3.8 

 (3) 4.5 

 (4) 8.5

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1 Answer

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answered Sep 12 by muskan15 (-3,447 points)

Correct option  (4) 8.5

 Explanation:

C = (A∈0K)/d & V = Ed

= C = (A∈0KE)/V

K = CV/A∈0E = ((15 × 10-12)(500))/10-4(8.86 × 10-12)(106)

= 8.5

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