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A 16 mu F capacitor is charged to a 20 V...

A 16 `mu F` capacitor is charged to a 20 Volt potential. Battery is then disconnected and inductor of inductance `40 mH ` is connected across the capacitor, So that LC oscillations are step-up. Maximum current in the coil is

A

0.4 A

B

`2 A`

C

0.8 A

D

0.2 A

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The correct Answer is:
A
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AAKASH INSTITUTE-ALTERNATING CURRENT -Assignment (Section - A) ( Objective Type Questions ( One option is correct))
  1. A charged capacitor and an inductor are connected in series. At time ...

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  2. The electrical analog of a spring constant k is

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  3. A 16 mu F capacitor is charged to a 20 Volt potential. Battery is then...

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  4. An LC series circuit with an inductance L and a capacitance C has an o...

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  5. In oscillating Lc circuit, the total stored energy is U and maximum ch...

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  6. The resonance frequency of a certain RLC series circuit is omega(0) . ...

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  7. A variable inductor inductor is connected to an AC source. When induc...

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  8. In series LCR AC circuit, the voltage of the source at any instant is ...

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  9. In a series RLC circuit, if the frequency is increased to a very large...

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  10. A series LCR circuit, has equal resistance capacitive reactance. What ...

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  11. Consider an ac circuit where an incandescent light bulb is in series ...

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  12. Which of the following is true for an ideal capacitor connected to a s...

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  13. A power outlet puts out 60 Hz AC. Which of the following statements is...

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  14. A transformer is used to light a 100 W and 110 V lamp from a 220V main...

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  15. In a series lags the applied emf. The rate at which energy is dissipat...

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  16. The core of a transformer is laminated to reduce

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  17. The primary coil of an ideal transformer has 100 turns and the seconda...

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  18. Power factor is one for

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  19. A sinusoidal alternating current of peak value (I0) passes through a h...

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  20. An ac voltage is represented by E=220 sqrt(2) cos (50 pi) t How m...

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