AC Circuit - R-C Circuit objective questions (mcq) and answers


31.  In a parallel R-C circuit, the current always ............the applied voltage


   A. Lags

   B. Leads

   C. Remains in phase with

   D. None of the above


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B. Leads

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32.  At very low frequencies a series R-C circuit behaves as almost purely............ circuit


   A. Resistive

   B. Inductive

   C. Capacitive

   D. None of the above


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C. Capacitive

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33.  An R-C series circuit is excited by a DC source. After its switching on


   A. The voltage across resistance R and capacitance are equal

   B. The voltage across resistance is zero

   C. The voltage across capacitance is zero

   D. The same of the voltage across R and C is always equal to the supply voltage


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D. The same of the voltage across R and C is always equal to the supply voltage

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34.  A square wave is fed to an R-C circuit. Then


   A. Voltage across R is square and across C is not square

   B. Voltage across C is square and across R is not square

   C. Voltage across both R and C is square

   D. Voltage across both R and C is not square


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D. Voltage across both R and C is not square

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35.  With the increase in applied frequency, the dielectric loss in a material will


   A. Increase

   B. Decrease

   C. Remain constant

   D. Become zero


✔ View Answer


A. Increase

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