Post Utme Noun 2021 Physics Question 30

Practice objective / multiple choice question 30 from the 2021 Post Utme Noun Physics examination.

Post Utme Noun 2021 Physics Objective / Multiple Choice
Question 30 POST_UTME_NOUN • 2021 • PHYSICS • objective
Post Utme Noun 2021 Physics Question 30 diagram

A circuit consists of a battery of emf $mathcal{E}$, a resistor of resis\tance $R$, and an inductor of induc\tance $L$. If the circuit is connected to a switch that is closed at time $t=0$, what is the current in the circuit at time $t$?

Answer Options

Correct Answer A. $i(t) = \frac{mathcal{E}}{R}\( 1-e^{-\frac{Rt}{L}} \)$
B. $i(t) = \frac{mathcal{E}}{R}\( 1+e^{-\frac{Rt}{L}} \)$
C. $i(t) = \frac{mathcal{E}}{R}\( e^{-\frac{Rt}{L}} \)$
D. $i(t) = \frac{mathcal{E}}{R}\( e^{\frac{Rt}{L}} \)$
Correct Answer
A
Correct Option:
$i(t) = \frac{mathcal{E}}{R}\( 1-e^{-\frac{Rt}{L}} \)$

About This Question

This is Post Utme Noun 2021 Physics Question 30. It is one of the objective questions from the 2021 Post Utme Noun Physics examination.

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