Post Utme Elizade University 2019 Physics Question 14

Practice objective / multiple choice question 14 from the 2019 Post Utme Elizade University Physics examination.

Post Utme Elizade University 2019 Physics Objective / Multiple Choice
Question 14 POST_UTME_ELIZADE_UNIVERSITY • 2019 • PHYSICS • objective

A circuit consists of a resistor $R$ and an inductor $L$ connected in series. If the circuit is driven by a voltage source of electromotive force $V$ and the circuit is initially at rest, what is the current $I$ in the circuit at time $t$?

Answer Options

A. \frac{V}{R}e^{-\frac{Rt}{L}}
Correct Answer B. \frac{V}{\sqrt{R^2+\omega^2L^2}}e^{-\frac{Rt}{L}}\sin\( \omega t-\frac{Rt}{L} \)
C. \frac{V}{R}e^{-\frac{\omega t}{L}}
D. \frac{V}{\sqrt{R^2+\omega^2L^2}}e^{-\frac{\omega t}{L}}\sin\( \omega t-\frac{\omega t}{L} \)
Correct Answer
B
Correct Option:
\frac{V}{\sqrt{R^2+\omega^2L^2}}e^{-\frac{Rt}{L}}\sin\( \omega t-\frac{Rt}{L} \)

About This Question

This is Post Utme Elizade University 2019 Physics Question 14. It is one of the objective questions from the 2019 Post Utme Elizade University Physics examination.

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