Question on circuit

  • Thread starter Peter R
  • Start date
  • #1
Peter R

Homework Statement


So here is a circuit question that I couldn't solve

Homework Equations


V=IR

The Attempt at a Solution


So I assumed that since the ammeter gives no reading it should lead to no potential difference in between those two points, then I'm completely stuck. Please help, the answer is D for reference:)
 

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Answers and Replies

  • #2
Tom.G
Science Advisor
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Think in terms of what is necessary, even if it is not sufficient.

(Nasty question though!)
 
  • #3
cnh1995
Homework Helper
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So I assumed that since the ammeter gives no reading it should lead to no potential difference in between those two points,
Ok, so now you can remove the ammeter from the circuit. It won't make any difference.

So how are R1 and R2 connected? How are R3 and R4 connected?
 
  • #4
Peter R
Think in terms of what is necessary, even if it is not sufficient.

(Nasty question though!)
Still have no clue man, a little more hint?
 
  • #5
Peter R
Ok, so now you can remove the ammeter from the circuit. It won't make any difference.

So how are R1 and R2 connected? How are R3 and R4 connected?
Ehh please be more specific man, thanks for the reply
 
  • #6
cnh1995
Homework Helper
Gold Member
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Ehh please be more specific man, thanks for the reply
Have you studied series and parallel connections? How are R1 and R2 connected?
 
  • #7
Peter R
Have you studied series and parallel connections? How are R1 and R2 connected?
Yea they are in series with the same current but shared voltage.
 

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