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Three students X,Y and Z performed an ex...

Three students X,Y and Z performed an experiment for studying the variation of alternating currents with angular frequency in a series LCR-circuit and obtained the graphs shown in the figure
They all used a.c sources of the same r.m.s. value and inductances of the same value. What can we conclude about the
capacitance value. What can we conclude about nature of the impedance of the set up at frequency `omega_0`?

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MODERN PUBLICATION-ALTERNATING CURRENTS-EXERCISE
  1. Show in the figure, two electric circuits A and B. Calculate the ratio...

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  2. What is the quality factor (Q) in an a.c. circuit?

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  3. Three students X,Y and Z performed an experiment for studying the vari...

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  4. Three students X,Y and Z performed an experiment for studying the vari...

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  5. What is sharpness of resonance?

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  6. Why does an LC circuit produce oscillations?

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  7. Why does an LC circuit produce oscillations?

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  8. Explain briefly, how the pehnomenon of resonance in the circuit can be...

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  9. In an a.c. circuit, why is there no power consumption for an ideal ind...

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  10. Prove mathematically that the average power over a complete cycle of a...

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  11. Prove that in an a.c. circuit, an ideal capacitor does nt dissipate po...

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  12. The instantaneous current and voltage in an a.c. circuit given by I = ...

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  13. What do you mean by power factor? On what factors does it depend?

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  14. Explain the importance of power factor.

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  15. For circuit used for transporting electric power, a low power factor i...

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  16. Why power factor correction is must in heavy machinery?

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  17. Power factor can often be improved by the use of capacitor of appropri...

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  18. Which is more dangerous in use a.c. or d.c.? Explain, why?

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  19. Why 200 V a.c. more dangerous than 220 V d.c.?

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  20. Why 200 V a.c. more dangerous than 220 V d.c.?

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