Neco Model Questions Vol1 2021 Physics Question 13
Practice objective / multiple choice question 13 from the 2021 Neco Model Questions Vol1 Physics examination.
When a resistor \(R\) is connected to a battery, the current measured is \(2\ \text{A}\) when \(R = 4\ \Omega\) and \(1\ \text{A}\) when \(R = 9\ \Omega\). Assuming the battery has an emf \(E\) and an internal resistance \(r\), (a) find the values of \(E\) and \(r\); (b) what external resistance would give the maximum power delivered to the external circuit, and what is that maximum power?
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About This Question
This is Neco Model Questions Vol1 2021 Physics Question 13. It is one of the objective questions from the 2021 Neco Model Questions Vol1 Physics examination.
Difficulty level: Hard .
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