Neco 2017 Physics Question 37

Practice objective / multiple choice question 37 from the 2017 Neco Physics examination.

Neco 2017 Physics Objective / Multiple Choice Hard Difficulty
Question 37 NECO • 2017 • PHYSICS • objective

An ideal battery of emf \(E\) volts and internal resistance \(r\) \(\Omega\) supplies a circuit consisting of a resistor \(R\) in series with a parallel combination of a 4 \(\Omega\) resistor (A) and an unknown resistor \(X\) \(\Omega\). The total current drawn from the battery is 3 A and the power dissipated in resistor \(R\) is 18 W. Additionally, the power dissipated in resistor A is 8 W. Determine the internal resistance \(r\) of the battery (in \(\Omega\)) and the resistance \(X\) (in \(\Omega\)).

Answer Options

Correct Answer A. r \approx 0.11 \Omega, X \approx 3.57 \Omega
B. r \\approx 0.05 \\Omega, X \\approx 2.80 \\Omega
C. r \\approx 0.20 \\Omega, X \\approx 4.00 \\Omega
D. r \\approx 0.15 \\Omega, X \\approx 5.00 \\Omega
Correct Answer
A
Correct Option:
r \approx 0.11 \Omega, X \approx 3.57 \Omega

About This Question

This is Neco 2017 Physics Question 37. It is one of the objective questions from the 2017 Neco Physics examination.

Difficulty level: Hard .

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