Neco Model Questions Vol1 2022 Physics Question 23
Practice objective / multiple choice question 23 from the 2022 Neco Model Questions Vol1 Physics examination.
A battery of emf \(E\) and internal resistance \(r\) is connected to a circuit as shown: resistors \(R_{1}=6\ \Omega\) and \(R_{2}=12\ \Omega\) are in parallel, their equivalent resistance is in series with a resistor \(R_{3}=12\ \Omega\) and the internal resistance \(r\). When the circuit is complete the total current is \(2.0\ \text{A}\) and the power dissipated in \(R_{3}\) is \(48\ \text{W}\). If the resistor \(R_{3}\) is removed, the current becomes \(3.0\ \text{A}\). Determine the emf \(E\) of the battery and its internal resistance \(r\).
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About This Question
This is Neco Model Questions Vol1 2022 Physics Question 23. It is one of the objective questions from the 2022 Neco Model Questions Vol1 Physics examination.
Difficulty level: Hard .
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