Capacitor Multiple Choice Questions and Answers


26.  When a capacitor undergoes a dielectric breakdown


   A. Dielectric stores energy rendering plates chargeless

   B. Electrons get scattered

   C. Electrons cease to move from one place to another

   D. Permanent conduction path is established between plates


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D. Permanent conduction path is established between plates

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27.  If the dielectric of a capacitor is replaced by a conducting material


   A. The capacitance value of the capacitor will shoot up to very high value

   B. The capacitor can store infinite charge

   C. The plates will get short-circuited

   D. The capacitor will get heated up due to eddy currents


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C. The plates will get short-circuited

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28.  Internal heating of a capacitor is usually attributed to


   A. Electron movement

   B. Leakage resistance

   C. Dielectric charge

   D. Plate vibration


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B. Leakage resistance

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29.  In a capacitor the electric charge is stored in


   A. Metal plates

   B. Dielectric

   C. Dielectric as well as metal plates

   D. None of the above


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B. Dielectric

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30.  A capacitor having a capacitance of 40 μF is connected across 250 V DC source. The charging current will be least


   A. When capacitor is fully charged

   B. When capacitor is have charged

   C. When capacitor is almost 25% charged

   D. None of the above


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A. When capacitor is fully charged

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