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A neon glow lamp used as a night light ionizes at approximately

A. 70 V

B. 80 V

C. 90 V

D. 100 V

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  1. It is impossible to change the voltage across a capacitor instantlya as this would produce ___ current.
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    If a certain circuit has a current that is lagging the voltage by 45a then it displays
  3. In a circuita an active element is one which
  4. Loop currents should be assumed to flow in which direction
  5. Tungsten filament of bulbs has a hot resistance higher than its cold resistance due to its temperature…
  6. The power factor of a certain circuit in which the voltage lags behind the current is 80 %. To increase…
  7. The current is ____ times the maximum current at half-power points of a resonance curve.
  8. What is the rms value of a square wave?
  9. The ratio of maximum value to the effective value of an alternating quantity is called
  10. In an ac circuit with a resistive branch and an inductive branch in parallela the
  11. The power factor of a circuit is equal to
  12. A 0.09 microfarad capacitor is charged to 220 volts. How long in milliseconds will it discharged resistor…
  13. What is the reciprocal of quality factor?
  14. What is the most convenient way of achieving large capacitance?
  15. In a complex resistance-reactance planea XLis represented
  16. Property of an electric circuit that dissipates electric energy
  17. The hot resistance of an incandescent lamp is about ___ times its cold resistance.
  18. Which of the following represents the energy stored in a cap
  19. Which of the following is also known as antiresonant circuit?
  20. What refers to the lowest voltage across any insulator that can cause current flow?
  21. What refers to such work at very low temperaturesa near absolute zero?
  22. The open-circuit voltage at the terminal of load RL is 60V. Under the condition of maximum power transfera…
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    When two pure sine waves of the same frequency and the same amplitude which are exactly 180 outof-phase are added togethera the result is
  24. Which of the following is a disadvantage of a wire-wound resistor?
  25. A law which states that when a constant electromotive force is applied to a circuit consisting of a…
  26. Which one of the following elements serves as a protection against overload?
  27. An ac series circuit is composed of a resistance of 20 a inductive reactance of 40 a and a capacitive…
  28. Liquids that are good conductors because of ionization are called
  29. If two equal resistances connected in series across a certain supply are now connected in parallel across…
  30. What is the complex impedance of a circuit with an absolute resistance of 300 ?