20. = In the circuit diagrammed in the figure, assume the switch has been closed for a long- time interval and is opened at 7=0. Also assume R = 8.00 2, L = 8.00 H, and E 16.0 V. Note: The switch is closed in parts (a), (b), and (c). It is opened in parts (d) and (e). a) Before the switch is opened, does the inductor behave as an (a) open circuit, (b) a short circuit, (c) a resistor of some special resistance, or (d) none of those choices? What current does the inductor carry? b) R 2R w c) for 1<0? d) How much energy is stored in the inductor + After the switch is opened, what happens to the Sketch a graph of the current in the inductor energy previously stored in the inductor? R 720. Label its initial and final values and its value at the time equals to the time constant. L
20. = In the circuit diagrammed in the figure, assume the switch has been closed for a long- time interval and is opened at 7=0. Also assume R = 8.00 2, L = 8.00 H, and E 16.0 V. Note: The switch is closed in parts (a), (b), and (c). It is opened in parts (d) and (e). a) Before the switch is opened, does the inductor behave as an (a) open circuit, (b) a short circuit, (c) a resistor of some special resistance, or (d) none of those choices? What current does the inductor carry? b) R 2R w c) for 1<0? d) How much energy is stored in the inductor + After the switch is opened, what happens to the Sketch a graph of the current in the inductor energy previously stored in the inductor? R 720. Label its initial and final values and its value at the time equals to the time constant. L
Chapter10: Direct-current Circuits
Section: Chapter Questions
Problem 94CP: Consider the circuit below, (a) What is the initial current through resistor R2? when the switch is...
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Transcribed Image Text:20.
=
In the circuit diagrammed in the figure, assume the switch has been closed for a long-
time interval and is opened at 7=0. Also assume R = 8.00 2, L = 8.00 H, and E 16.0 V. Note:
The switch is closed in parts (a), (b), and (c). It is opened in parts (d) and (e).
a)
Before the switch is opened, does the inductor behave as an (a) open circuit, (b) a
short circuit, (c) a resistor of some special resistance, or (d) none of those choices?
What current does the inductor carry?
b)
R
2R
w
c)
for 1<0?
d)
How much energy is stored in the inductor
+
After the switch is opened, what happens to the
Sketch a graph of the current in the inductor
energy previously stored in the inductor?
R
720. Label its initial and final values and its value at the time equals to the time constant.
L
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