College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Question
Just after the switch has been closed, why does I=0?
![As always, we’ll start with the concepts. The following figure, Figure 1, is a schematic of a RL circuit with a switch.
![Figure 1 image](https://via.placeholder.com/100)
**Figure 1**: Schematic of a RL circuit.
“R” includes the resistance of the coil, wires, and resistors, if any. At time t = 0, the switch is open and no current flows. After the switch is closed, the current eventually (typically, really in only fractions of a second) approaches its maximum value I<sub>max</sub>. A current versus time graph for this RL circuit looks something like that shown below in Figure 2:
![Figure 2 image](https://via.placeholder.com/100)
**Figure 2**: Time dependence of the current flowing through a RL circuit.
It’s wise to understand the basic shape of this graph.
**Q2.** Just after the switch has been closed, why does I = 0?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F43da8127-b8b5-4d0a-8317-0b1da88f2197%2Fb86582ba-5688-473d-aa6c-91af15f0fb0e%2Fehlituf_processed.png&w=3840&q=75)
Transcribed Image Text:As always, we’ll start with the concepts. The following figure, Figure 1, is a schematic of a RL circuit with a switch.
![Figure 1 image](https://via.placeholder.com/100)
**Figure 1**: Schematic of a RL circuit.
“R” includes the resistance of the coil, wires, and resistors, if any. At time t = 0, the switch is open and no current flows. After the switch is closed, the current eventually (typically, really in only fractions of a second) approaches its maximum value I<sub>max</sub>. A current versus time graph for this RL circuit looks something like that shown below in Figure 2:
![Figure 2 image](https://via.placeholder.com/100)
**Figure 2**: Time dependence of the current flowing through a RL circuit.
It’s wise to understand the basic shape of this graph.
**Q2.** Just after the switch has been closed, why does I = 0?
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