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For maximum power transfera what is the relation between load resistance RL and internal resistance R of the voltage source?

A. RL= 2 r

B. RL= 1.5 r

C. RL= r

D. RL= 3 r

Correct Answer : C.


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  1. The rms value of a triangular or sawtooth waveform is ___ tim value.
  2. If the inductance is decreaseda the impedance of the circuit containing a resistor a capacitor and an…
  3. A capacitive load always has a ______ power facto
  4. When two coils of identical reactance are in parallel without mutual inductancea the reactance of the…
  5. The ratio between the reactive power and the apparent power of an ac load is called
  6. The average value of a triangular or sawtooth wave is _____ times its peak value.
  7. What maximum voltage can be applied across the capacitor of time?
  8. What is the total capacitance of 10 capacitorsa each of 20 F in series?
  9. For multi-plate capacitora capacitance is proportional to
  10. If a multiplate capacitor has 10 platesa each of area 10 cm2a then
  11. When two unequal values of resistors are connected in parallel across a dc sourcea greater current flows…
  12. A capacitor is used to
  13. What does a capacitor store?
  14. If a capacitor is rated for 200V dca what is its effective ac working voltage?
  15. What is the reciprocal of capacitance?
  16. In the 5-band method of capacitor color codinga the first band indicates
  17. The presence of an electric current is made known by
  18. Voltage resonance means
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  21. What fusion of elements is without chemical action between them?
  22. The reason why electrical appliances are connected in parallel.
  23. Why are inductance and capacitance not relevant in a dc circuit?
  24. Inductive reactance applies only to sine waves because it

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    ³Any resistance R in a branch of a network in which a current I is flowing can be replaced by a voltage equal to IR´. This states
  26. In a rectangular wavea the peak factor is
  27. The capacitor opposes any change in voltage across it by
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