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Circuit diagram questions -- 3 Light Bulbs in a 120V circuit

  • Thread starter joshqg
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  • #1
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Homework Statement:

In the circuit shown, all of the light bulbs are identical. a) If the ammeter, A1, reads 150 A when the switch S is open. What do A2,A3,A4,A5 read? b) If the switch is closed what do they read?

Homework Equations:

Kirchhoff law
I have A2 as 150, A4 as 150, A5 as 300 and A3 as 0. I just need these answers checked to make sure I’m right.
 

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  • #2
BvU
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to make sure I’m right.
That's not what PF is for. Hire a lawyer. Better: convince yourself :smile: .

Anyway, there is a question a) and a b). Which do you answer ?
 
  • #3
kuruman
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A bulb that draws 150 A will trip a circuit breaker or blow a fuse or start a fire. There is no breaker or fuse in the circuit shown so if you've tried this at home, consider hiring the lawyer that @BvU mentioned. :oldsmile:
 
  • #4
BvU
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:smile: we change the playing field: where it says 150 A, read 150 mA, and proceed with the exercise.
Are the numbers quoted meant for part a) ?
 
  • #5
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:smile: we change the playing field: where it says 150 A, read 150 mA, and proceed with the exercise.
Are the numbers quoted meant for part a) ?
Ya we're allowed to use mA for this question, just didn't want any confusion.
 

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