The arc across a switch when it open an RL circuit is a result of the

A. Large self-induced voltage across L

B. Long time constant

C. Low resistance of the open switch

D. Surge of resistance

Please do not use chat terms. Example: avoid using "grt" instead of "great".

You can do it
  1. What is the resonant frequency of a circuit when L of 25 microhenrys and C of 10 picofarads are in parallel?
  2. A resistor wound with a wire doubled back on itself to reduce the inductance.
  3. It is impossible to change the voltage across a capacitor instantlya as this would produce ___ current.
  4. The reciprocal of a complex number is
  5. What is the specific resistance of a pure germanium?
  6. What is considered as the most important value of a sine wave?
  7. The ratio between the reactive power and the apparent power of an ac load is called
  8. The graph between an alternating quantity and time is called
  9. A coil of inductance L has an inductive reactance of XLin an ac circuit in which the effective current…
  10. Which of the following materials has the lowest dielectric strength?
  11. Which of the following is a way of decreasing mutual inductance?
  12. When the temperature of copper wire is increased its resistance is
  13. As applied to a series RLCcircuita bandwidth means
  14. In dividing or multiplying phasor quantitiesa ___ form is used.
  15. Voltage resonance means
  16. If two resistances of 9 and 6 are connected in parallela the total resistance is
  17. In liquids and gasesa ionization current results from a flow of
  18. The presence of an electric current is made known by
  19. In a circuita a passive element is one which
  20. When two pure sine waves of the same frequency and the same amplitude which are exactly 180 outof-phase…
  21. The admittance of a parallel RLC circuit is found to be the ___ sum of conductance and susceptances.
  22. What is the peak factor for alternating current or voltage varying sinusiodally?
  23. Which of the following does not generally affect the value of a capacitor?
  24. What is the conductance of a circuit having three 10 resistors in parallel?
  25. Points to be considered in choosing a capacitor
  26. A three-by-threea series-parallel matrix of resistorsa all having the same ohmic valuea would have a…
  27. What is the reciprocal of capacitance?
  28. A wire of one kilometre length has a resistance of 20 . If the length is halveda then the new resistance…
  29. In a parallel bank with unequal branch resistances
  30. A circuit whose parameters change with voltage or current.