Neco Model Questions Vol1 2024 Physics Question 40
Practice objective / multiple choice question 40 from the 2024 Neco Model Questions Vol1 Physics examination.
A battery of emf \(12\ \text{V}\) has an internal resistance of \(0.5\ \Omega\). It is connected to an external circuit consisting of a resistor \(R\) in series with a parallel combination of a \(6\ \Omega\) resistor and a \(12\ \Omega\) resistor. (a) What value of \(R\) will maximise the total power dissipated in the external circuit? (b) For that value of \(R\), calculate the efficiency of the circuit as a percentage (to the nearest percent).
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This is Neco Model Questions Vol1 2024 Physics Question 40. It is one of the objective questions from the 2024 Neco Model Questions Vol1 Physics examination.
Difficulty level: Hard .
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