When maximum power is transferred to load then efficiency will be:
Correct answer: B. 50%
- A. 100%
- B. 50%
- C. 99.9%
- D. 70%
Explanation
In the scenario of maximum power transfer, the load resistance is equal to the source resistance. This results in an equal division of voltage across the load and source resistances, leading to an efficiency of 50%. This is because only half of the power supplied by the source is delivered to the load, with the other half dissipated in the source resistance. Therefore, the correct answer is 50%. The other options are incorrect because they represent efficiencies that are not consistent with the maximum power transfer theorem.
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About Alternating Current
Alternating current varies periodically, so phase relationships become essential when current passes through a resistor, capacitor or inductor. The chapter distinguishes resistance from capacitive and inductive reactance, explains phase lead and lag, and connects changing electric and magnetic fields with the production and properties of electromagnetic waves.
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