Igcse Model Questions Vol1 2023 Physics Question 23
Practice objective / multiple choice question 23 from the 2023 Igcse Model Questions Vol1 Physics examination.
A \(12\ \text{V}\) battery has an internal resistance \(r\). When it supplies a lamp of resistance \(R\) the current through the circuit is \(2\ \text{A}\) and the terminal voltage across the lamp is measured to be \(10\ \text{V}\). (a) Find the values of \(r\) and \(R\). (b) Calculate the efficiency of the battery as a percentage.
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About This Question
This is Igcse Model Questions Vol1 2023 Physics Question 23. It is one of the objective questions from the 2023 Igcse Model Questions Vol1 Physics examination.
Difficulty level: Hard .
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