Gce Model Questions Vol1 2019 Physics Question 35

Practice objective / multiple choice question 35 from the 2019 Gce Model Questions Vol1 Physics examination.

Gce Model Questions Vol1 2019 Physics Objective / Multiple Choice Hard Difficulty
Question 35 GCE_MODEL_QUESTIONS_VOL1 • 2019 • PHYSICS • objective

A battery of emf \(24\ \text{V}\) and internal resistance \(1\ \Omega\) supplies two resistors \(R_{1}=6\ \Omega\) and \(R_{2}\) connected in parallel. The total current drawn from the battery is \(4\ \text{A}\). Determine the value of the unknown resistor \(R_{2}\). Then calculate the power dissipated in \(R_{2}\) and state whether this power exceeds a rating of \(10\ \text{W}\).

Answer Options

A. R_{2}=15 Ω; power dissipated = 20.0 W (exceeds 10 W rating)
Correct Answer B. R_{2}=30 Ω; power dissipated = 13.3 W (exceeds 10 W rating)
C. R_{2}=20 Ω; power dissipated = 8.0 W (does not exceed 10 W rating)
D. R_{2}=40 Ω; power dissipated = 5.0 W (does not exceed 10 W rating)
Correct Answer
B
Correct Option:
R_{2}=30 Ω; power dissipated = 13.3 W (exceeds 10 W rating)

About This Question

This is Gce Model Questions Vol1 2019 Physics Question 35. It is one of the objective questions from the 2019 Gce Model Questions Vol1 Physics examination.

Difficulty level: Hard .

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