Unsolved Circuit Question: Ammeter Reading and Potential Difference

[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:)

 

[Tom.G]

Think in terms of what is necessary, even if it is not sufficient.

(Nasty question though!)

 

[cnh1995]

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?

 

[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?

 

[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

 

[cnh1995]

Ehh please be more specific man, thanks for the reply

Have you studied series and parallel connections? How are R1 and R2 connected?

 

[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.