City Guilds Model Questions Vol1 2023 Engineering Question 49

Practice objective / multiple choice question 49 from the 2023 City Guilds Model Questions Vol1 Engineering examination.

City Guilds Model Questions Vol1 2023 Engineering Objective / Multiple Choice Medium Difficulty
Question 49 CITY_GUILDS_MODEL_QUESTIONS_VOL1 • 2023 • ENGINEERING • objective

In the circuit shown, resistor \(R_1 = 10\;\Omega\) is connected in series with a parallel branch consisting of resistor \(R_3 = 20\;\Omega\) and an unknown resistor \(R_2\). The total resistance of the circuit must be \(15\;\Omega\). (i) Find the value of \(R_2\). (ii) If the circuit is powered by a \(120\;\text{V}\) source, calculate the total current and the power dissipated in \(R_2\).

Answer Options

Correct Answer A. R2 = 20/3 Ω, P = 240 W
B. R2 = 5 Ω, P = 120 W
C. R2 = 40/3 Ω, P = 300 W
D. R2 = 10 Ω, P = 180 W
Correct Answer
A
Correct Option:
R2 = 20/3 Ω, P = 240 W

About This Question

This is City Guilds Model Questions Vol1 2023 Engineering Question 49. It is one of the objective questions from the 2023 City Guilds Model Questions Vol1 Engineering examination.

Difficulty level: Medium .

View More City Guilds Model Questions Vol1 2023 Engineering Questions More City Guilds Model Questions Vol1 Practice Questions Back to Questions

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows
Chat with Support