Gce Model Questions Vol1 2024 Physics Question 25
Practice objective / multiple choice question 25 from the 2024 Gce Model Questions Vol1 Physics examination.
A 12 V ideal battery has an internal resistance \(r\) and is connected to a variable external load resistor \(R\). The circuit is adjusted so that the load receives the maximum possible power of \(9\ \text{W}\). (i) Find the value of the internal resistance \(r\) (in ohms). (ii) At this condition, calculate the efficiency of the circuit as a percentage.
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This is Gce Model Questions Vol1 2024 Physics Question 25. It is one of the objective questions from the 2024 Gce Model Questions Vol1 Physics examination.
Difficulty level: Hard .
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