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Circuit Analysis: Light Intensity Changes with Switch

Chapter 21, Problem 95

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QUESTION:

Consider the circuit shown in Figure 21-46, in which three lights, each with a resistance R, are connected in parallel. The circuit also contains an open switch. (a) When the switch is closed, does the intensity of light 3 increase, decrease, or stay the same? Explain. (b) Do the intensities of lights 1 and 2 increase, decrease, or stay the same when the switch is closed? Explain.

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Circuit Analysis: Light Intensity Changes with Switch
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Unlock the world of electrical circuits and light intensity! In this video, we explore a circuit with three lights connected in parallel, featuring an open switch. Discover what happens to the intensity of each light when the switch is closed. Join us for a journey through electrical concepts and enlightening explanations.

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Questions & Answers

QUESTION:

Consider the circuit shown in Figure 21-46, in which three lights, each with a resistance R, are connected in parallel. The circuit also contains an open switch. (a) When the switch is closed, does the intensity of light 3 increase, decrease, or stay the same? Explain. (b) Do the intensities of lights 1 and 2 increase, decrease, or stay the same when the switch is closed? Explain.

ANSWER:

Step 1 of 3

The circuit having three lights with resistances can be shown as,

  

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