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Question 31515
JEE Physics · Hard

Capacitance: Guard Ring MCQ

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Guard RingHardQuestion 31515

Question

Guard rings are used in precision capacitor measurements to:
  1. A
    Increase plate area
  2. B
    Eliminate fringing fields
    Correct
  3. C
    Reduce dielectric constant
  4. D
    Increase separation

Correct answer

Eliminate fringing fields

Explanation

Guard rings surrounding the active plate maintain a uniform field and eliminate edge effects in measurements.

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