If two resistances of 9 and 6 are connected in parallela the total resistance is



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  1. When two complex conjugates are subtracteda the result is a
  2. In an ac circuit with inductive reactance ?, the
  3. When frequency of an ac wave decreasesa the value of XLin a coil
  4. What does a capacitor store?
  5. A law which states that when a constant electromotive force is applied to a circuit consisting of a…
  6. Metal tin becomes superconductor at approximately
  7. What is the specific resistance of a pure silicon?
  8. At parallel resonancea the currents flowing through L and C are
  9. The hot resistance of an incandescent lamp is about ___ times its cold resistance.
  10. Which of the following capacitors has the highest cost per F?
  11. A 0.09 microfarad capacitor is charged to 220 volts. How long in milliseconds will it discharged resistor…
  12. A wire of one kilometre length has a resistance of 20 . If the length is halveda then the new resistance…
  13. What is the reciprocal of capacitance?
  14. When the net reactance in a series coil-capacitor circuit is zero at frequency fa the nature of its…
  15. A resistor wound with a wire doubled back on itself to reduce the inductance.
  16. The potential gradient in a cable is maximum in
  17. A tank circuit is a
  18. The ___ of an alternating quantity is defined as the fractional part of a period or cycle through which…
  19. Of the equivalent combination of unitsa which one is not equal to watt?
  20. What is the conductance of a circuit having three 10 resistors in parallel?
  21. Points to be considered in choosing a capacitor
  22. According to Gauss theorema flux can be equated to
  23. Which one of the following elements serves as a protection against overload?
  24. In a rectangular wavea the peak factor is
  25. In the 5-band method of capacitor color codinga the first band indicates
  26. What is the other name of relative permittivity?
  27. For a series ACcircuita ___ is not used as a reference phasor.
  28. The reactance curve is a plot of frequency versus _____ for a series RLCcircuit
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    A lead conductor has a resistance of 25 at 0 C. Determine its resistance at -30 C
  30. In a series circuit with unequal resistances the