Neco 2024 Physics Question 19

Practice objective / multiple choice question 19 from the 2024 Neco Physics examination.

Neco 2024 Physics Objective / Multiple Choice Hard Difficulty
Question 19 NECO • 2024 • PHYSICS • objective

In the circuit shown, a battery of emf \(\varepsilon\) and internal resistance \(r\) supplies a network consisting of a \(12\ \Omega\) resistor in series with a parallel combination of a \(6\ \Omega\) resistor and a \(4\ \Omega\) resistor. The current through the \(6\ \Omega\) resistor is measured to be \(2.0\) A and the total current supplied by the battery is \(5.0\) A. The power dissipated in the internal resistance of the battery is \(20.0\) W. Determine the emf \(\varepsilon\) of the battery and its internal resistance \(r\).

Answer Options

A. \(\varepsilon = 80\ \text{V},\; r = 0.50\ \Omega\)
B. \(\varepsilon = 70\ \text{V},\; r = 1.0\ \Omega\)
C. \(\varepsilon = 76\ \text{V},\; r = 1.20\ \Omega\)
Correct Answer D. \(\varepsilon = 76\ \text{V},\; r = 0.80\ \Omega\)
Correct Answer
D
Correct Option:
\(\varepsilon = 76\ \text{V},\; r = 0.80\ \Omega\)

About This Question

This is Neco 2024 Physics Question 19. It is one of the objective questions from the 2024 Neco Physics examination.

Difficulty level: Hard .

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