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Question 31600
JEE Physics · Hard

Capacitance: High-Voltage Capacitor Design MCQ

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High-Voltage Capacitor DesignHardQuestion 31600

Question

To withstand very high voltage without breakdown, a designer should choose a dielectric with:
  1. A
    Low dielectric strength and high K
  2. B
    High dielectric strength and appropriate K
    Correct
  3. C
    K = 1 always
  4. D
    Low permittivity only

Correct answer

High dielectric strength and appropriate K

Explanation

Dielectric strength (breakdown field) must exceed operating field. High K allows smaller physical size. Trade-offs: BaTiO₃ has K~1000 but lower breakdown than PTFE (K~2, very high breakdown).

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