<PHYS1114 FALL 2022 HW9 Chapter 30 and 31
+ PSS 30.1: Inductors in Circuits
Learning Goal:
To practice Problem-Solving Strategy 30.1: Inductors in Circuits.
A circuit has a 4.6 V battery connected in series with a switch.
When the switch is closed, the battery powers two paths in
parallel, one of which has a resistor of resistance $R_1 = 90 \Omega$ in
series with an inductor of inductance $L = 1.2 \times 10^{-2} H$, while the
other has a resistor of resistance $R_2 = 420 \Omega$. What is the
current supplied by the battery at a time $t = 0.25 \text{ ms}$ after the
switch is closed?
What is the current $i_1$ supplied by the battery a time $t = 0.25 \text{ ms}$ after the switch is closed?
Express your answer in amperes to three significant figures.
$i_1 = 5.42 \times 10^{-2} A$
Correct
Correct answer is shown. Your answer 0.05422 A was either rounded differently or used a different number of significant figures than required for
this part
EVALUATE your answer
Part D
In the previous part, you found the current supplied by the battery 0.25 ms after the switch is closed. What will be the steady-state current, $I_1$, supplied by the
battery after the switch has been closed for a very long time?
Express your answer in amperes to three significant figures.
$I_1 = $
