Neco Model Questions Vol1 2023 Physics Question 16
Practice objective / multiple choice question 16 from the 2023 Neco Model Questions Vol1 Physics examination.
An unknown battery is tested with two different external resistors. - With a resistor \(R\) the terminal voltage across the resistor is \(6\ \text{V}\) and the current measured is \(2\ \text{A}\). - When the external resistance is changed to \(2R\) the terminal voltage becomes \(8\ \text{V}\). Assuming the battery has an emf \(E\) and an internal resistance \(r\), determine: 1. The emf \(E\) (in volts) and the internal resistance \(r\) (in ohms) of the battery. 2. The value of external resistance that will draw maximum power from the battery, and the maximum power (in watts) delivered to that load.
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About This Question
This is Neco Model Questions Vol1 2023 Physics Question 16. It is one of the objective questions from the 2023 Neco Model Questions Vol1 Physics examination.
Difficulty level: Hard .
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