If the battery in (Figure 1) were ideal, lightbulb A would not dim when the switch is closed. However, real batteries have a small internal resistance, which we can model as the 0.3 Ω resistor shown inside the battery. In this case, the brightness of bulb A changes when the switch is closed. Assume E = 1.9 V. How much power does bulb A dissipate when the switch is closed?
If the battery in (Figure 1) were ideal, lightbulb A would not dim when the switch is closed. However, real batteries have a small internal resistance, which we can model as the 0.3 Ω resistor shown inside the battery. In this case, the brightness of bulb A changes when the switch is closed. Assume E = 1.9 V. How much power does bulb A dissipate when the switch is closed?
Chapter9: Current And Resistance
Section: Chapter Questions
Problem 55P: A 20.00-V battery is used to supply current to a 10-k resistor. Assume the voltage drop across any...
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Question
If the battery in (Figure 1) were ideal, lightbulb A would not dim when the switch is closed. However, real batteries have a small internal resistance, which we can model as the 0.3 Ω resistor shown inside the battery. In this case, the brightness of bulb A changes when the switch is closed. Assume E = 1.9 V.
How much power does bulb A dissipate when the switch is closed?
![If the battery in (Figure 1) were ideal, lightbulb A would not
dim when the switch is closed. However, real batteries
have a small internal resistance, which we can model as
the 0.3 2 resistor shown inside the battery. In this case,
the brightness of bulb A changes when the switch is
closed. Assume E = 1.9 V.
Figure
0.3 Ω
E
+|||___
A
16.0 Ω (8) 6.0 Ω
1 of 1
Part A
How much power does bulb A dissipate when the switch is open?
Express your answer with the appropriate units.
Popen = 0.55 W
Submit
Correct
Part B
Previous Answers
How much power does bulb A dissipate when the switch is closed?
Express your answer with the appropriate units.
Pclosed = 1.98
Submit
Provide Feedback
μÅ
W
Previous Answers Request Answer
X Incorrect; Try Again; One attempt remaining
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Transcribed Image Text:If the battery in (Figure 1) were ideal, lightbulb A would not
dim when the switch is closed. However, real batteries
have a small internal resistance, which we can model as
the 0.3 2 resistor shown inside the battery. In this case,
the brightness of bulb A changes when the switch is
closed. Assume E = 1.9 V.
Figure
0.3 Ω
E
+|||___
A
16.0 Ω (8) 6.0 Ω
1 of 1
Part A
How much power does bulb A dissipate when the switch is open?
Express your answer with the appropriate units.
Popen = 0.55 W
Submit
Correct
Part B
Previous Answers
How much power does bulb A dissipate when the switch is closed?
Express your answer with the appropriate units.
Pclosed = 1.98
Submit
Provide Feedback
μÅ
W
Previous Answers Request Answer
X Incorrect; Try Again; One attempt remaining
?
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