A coil of inductance L has an inductive reactance of XLin an ac circuit in which the effective current is I. The coil is made from a superconducting material. The rate at which power is dissipated in the coil is





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  1. When two in-phase sine waves that have identical frequency and amplitude are added togethera then the…
  2. Liquids that are good conductors because of ionization are called
  3. The charging of a capacitor through a resistance obeys
  4. Which of the following conditions is not true for a series RLCcircuit at resonance?
  5. When frequency of an ac wave decreasesa the value of XLin a coil
  6. Tungsten filament of bulbs has a hot resistance higher than its cold resistance due to its temperature…
  7. What is expected when two 20 k a 1 watt resistor in parallel are use instead of one 10 k a 1 watt?
  8. The area of capacitor plates increases two timesa then its capacitance
  9. If an emf in circuit A produces a current in circuit Ba then the same emf in circuit Bproduces the same…
  10. The internal resistance of an ideal voltage source is
  11. In a complex resistance-reactance planea XLis represented
  12. For a series circuita the higher the quality factor
  13. High resistance values are a consequence of the ___ of the film.
  14. An inductance of 1 mH is
  15. At parallel resonancea the currents flowing through L and C are
  16. Which of the following combination of length and cross-sectional area will give a certain volume of…
  17. In a complex number 5 + j 10a 10 is called ___ part.
  18. A term used to express the amount of electrical energy stored in electrostatic field.
  19. The superposition theorem is used when the circuit contains
  20. Rationalizing the denominator of a complex number means
  21. Which of the following represents the energy stored in a cap
  22. An inductive load always has a ___ power factor
  23. Which of the following is the most popular waveform?
  24. For a triangular and sawtooth waveform the rms voltage or current equals
  25. Which of the statements below is not true?
  26. The ratio of the flux density to the electric field intensity in the dielectric is called
  27. If two equal resistances connected in series across a certain supply are now connected in parallel across…
  28. And ideal current source has an internal conductance of _____ siem
  29. Which of the following dielectric materials makes the lowest-capacitance capacitor?
  30. The capacitance of a capacitor is ___ relative permittivity.