In a charged capacitor the energy resides in________________?

Related Mcqs:

1. A capacitor having capacitance of 5 uF is charged to a potential difference of 10,000 V. The energy stored in the capacitor is__________?

   A. 50 joules
   B. 150 joules
   C. 200 joules
   D. 250 joules

2. While testing a capacitor with ohm meter, if the capacitor shows charging, but the final resistance reading is appreciably less than normal, it can be concluded that the capacitor is____________?

   A. short-circuited
   B. open circuited
   C. alright
   D. leaky

3. Energy stored in the electric field of a capacitor C when charged from a D.C source of voltage V is equal to joules_______________?

   A. CV2
   B. C2V
   C. CV2
   D. CV

4. A 5 μF capacitor has a potential difference across its plates of 200 volts. The charge on the capacitor is____________?

   A. 2.5 x 10-8 C
   B. 10-5 C
   C. 103 C
   D. 4 x 103 C

5. A mica capacitor and a ceramic capacitor both have the same physical dimensions. Which will have more value of capacitance _______?

   A. Ceramic capacitor
   B. Mica capacitor
   C. Both will have identical value of capacitance
   D. It depends on applied voltage

6. A capacitor in a circuit became hot and ultimately exploded due to wrong connections, which type of capacitor it could be ?

   A. Paper capacitor
   B. Ceramic capacitor
   C. Electrolytic capacitor
   D. Any-of the above

7. The input capacitor in an amplifier is the______________ capacitor?

   A. Coupling
   B. Bypass
   C. Leakage
   D. None of the above

8. A parallel resonant band-pass filter consists of a 6.8 Ω resistor in series with a parallel network made up of an 8 µH coil and a 120 pF capacitor. The output is taken across the capacitor/coil. Assume RW = 0 Ω. What is the center frequency of the filter?

   A. 5.14 MHz
   B. 514 kHz
   C. 5.03 MHz
   D. 503 kHz

9. An RC low-pass filter consists of a 120 Ω resistor and a 0.002 µF capacitor. The output is taken across the capacitor. The circuit’s critical frequency is___________?

   A. 333 kHz
   B. 633 kHz
   C. 331 kHz
   D. 60 kHz

10. A parallel resonant band-pass filter consists of a 90 Ω resistor in series with a parallel network made up of a 60 mH coil and a 0.02 µF capacitor. The output is taken across the capacitor/coil. The coil winding has a resistance of 20 Ω. What is the center frequency of the filter?

    A. 459 Hz
    B. 4,591 Hz
    C. 999 Hz
    D. 2,176 Hz