Post Utme Abu 2020 Physics Question 13

Practice objective / multiple choice question 13 from the 2020 Post Utme Abu Physics examination.

Post Utme Abu 2020 Physics Objective / Multiple Choice
Question 13 POST_UTME_ABU • 2020 • PHYSICS • objective
Post Utme Abu 2020 Physics Question 13 diagram

A circuit consists of a resistor $R$, an inductor $L$, and a capacitor $C$ connected in series. The impedance of the circuit is given by $Z = \sqrt{R^2 + \( \omega L - \frac{1}{\omega C} \)^2}$. If the resis\tance is doubled and the induc\tance is halved, what is the new impedance?

Answer Options

A. \sqrt{4R^2 + \( \omega L - \frac{1}{\omega C} \)^2}
B. \sqrt{R^2 + \( \omega L - \frac{1}{2\omega C} \)^2}
Correct Answer C. \sqrt{4R^2 + \( \omega L - \frac{2}{\omega C} \)^2}
D. \sqrt{R^2 + \( \omega L - \frac{1}{\omega C} \)^2}
Correct Answer
C
Correct Option:
\sqrt{4R^2 + \( \omega L - \frac{2}{\omega C} \)^2}

About This Question

This is Post Utme Abu 2020 Physics Question 13. It is one of the objective questions from the 2020 Post Utme Abu Physics examination.

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