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Show that in the free oscillations of an...

Show that in the free oscillations of an LC circuit, the sum of energies stored in the capacitor and and the inductor is constant in time.

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MODERN PUBLICATION-ALTERNATING CURRENT -Revision Exercises Short Answer Questions
  1. What is a phasor ? What is the phase difference between current and vo...

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  2. Can a capacitor of suitable capacitance be use dto control a.c in plac...

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  3. Show that in the free oscillations of an LC circuit, the sum of energi...

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  4. A bulb connected in series with a solenoid is lit by a.c. source, Fig....

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  5. How will the inductive reactance and capacitive reactance change on do...

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  6. Can the voltage drop across the inductor or capacitro in a series LCR ...

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  7. What do you mean by impedance of LCR series circuit ? Derive an expres...

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  8. Why does a capacitor block DC whereas an inductor allows DC to pass th...

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  9. (i) An a.c. Source of voltage V = V(0) " sin " omegat is connected...

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  10. In an LCR series combination R= 400 Omega L =100 mH and C = 1 muF . ...

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  11. Give three elements X, Y and Z to be connected across an ac source . W...

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  12. A capacitor C a variable resistor R and a bulb B are connected in seri...

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  13. Why is the use of AC voltage preferred over DC voltage ? Give two reas...

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  14. A voltage V = V(0)sinomegat is applied to a series LCR circuit. Derive...

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  15. Draw the phasor diagram of a series LCR connected across an ac source ...

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  16. (a) For a given a.c., i = i(m) sin wt, show that the average power dis...

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  17. (a) In a series LCR circuit connected across an AC source of varible f...

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  18. What is electric resonance ?

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  19. Write down the condition of resonance in series L-C-R circuit and henc...

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  20. An inductor L of inductance X(L) is connected in series with a bulb B ...

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