Which component is shorted?

[charmcaster.engg]

Which component is shorted? and why?

 

[Gryd3]

Which component is shorted? and why?

Perhaps a better explanation is required.
It appears to me that the boxes along the top are Amp Meters, and they all read the same thing.
Do you have any additional note or details about the circuit?
Which component(s) do you expect?

Edit: This certainly appears to be Homework Help, please put this in the homework section next time.

 

[davenn]

OK this is now in the homework section
direct answers will not be given, rather you will get help to figure out the answer for yourself

clarify the drawing you have given, and tell us what you think about what the circuit is telling you

cheers
Dave

 

[charmcaster.engg]

Perhaps a better explanation is required.
It appears to me that the boxes along the top are Amp Meters, and they all read the same thing.
Do you have any additional note or details about the circuit?
Which component(s) do you expect?

Edit: This certainly appears to be Homework Help, please put this in the homework section next time.

Answer is given as R4. But don't have explanation.

 

[Gryd3]

Answer is given as R4. But don't have explanation.

Take a look at the drawing again, and try to look at where the current will flow if R4 is shorted.

 

[Harald Kapp]

Answer is given as R4. But don't have explanation.

Assuming the boxes are ammeters (gryd3's post #2), each box could be replaced by a short circuit as an ideal ammeter measures current without introducing any additional resistance into the circuit (note that real ammeters do have a resistance). In that case a short of any of the resistors R1...R4 would cause an infinite current from the voltage source through all ammeters to the left of the shorted resistors. The ammeters to the right of the shorted resistor would see a current of 0A because the voltage across the short circuit is 0V.


The task description is not well done. Here are a few issues:

• The ammeters obviously do not have 0Ω resistance, otherwise current would be infinite in a short circuit situation.
• Infinite current is indicated by the ammeters showing 2.400 GA. Quite a lot but not infinite.
• No indication is given as to the "quality" of the components. Are ideal components to be used (e.g. ammeters and voltage source having 0Ω resistance) or real ones (ammeter's or voltage source's resistance > 0Ω)? Obviously the latter but without clear detail.

 

[charmcaster.engg]

Ok. Thank you all.