Name PROBLEM 3 - 8 points In this circuit, the bulbs are identical, with each bu

Question

Name PROBLEM 3 - 8 points In this circuit, the bulbs are identical, with each bulb having a fixed resistance R. [2 points] (a) With the switch open, which bulb is the brightest? In one sentence, provide a simple justification to support your answer. [2 points] (b) When the switch is closed, which bulb is the brightest? In one sentence, provide a simple justification to support your answer [2 points] (c) Considering the two cases above, which bulb is the brightest? [ ] The one that is brightest when the switch is open [ ] The one that is brightest when the switch is closed [ ] These bulbs are equally bright In one sentence, provide a simple justification to support your answer [2 points] (d) When the switch is closed, which bulb or bulbs become brighter than they were when the switch was open? Select all that apply

Explanation / Answer

Here ,

a) when the switch is open , as the maximum current passes through D

bulb D is the brightest

b)

when the switch is closed , maximum current will pass through B

hence , bulb B will be brighest

c)

the one that is brightest wwhen the switch is open >> D

the one that is brightest when the swwitch is closed >> B

equally bright bulbs >> C and D

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when the switch is closed , maximum current will pass through B

when the switch is open , as the maximum current passes through D

d) when the switch is closed , the bulbs which will be brighter are

C , B , D

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