Resistance measurement using multimeter

[vinodquilon]

Resistance/Voltage measurement using multimeter

Consider the below circuit with 28V supply and 5A load.

What voltage would I expect when I connect a multimeter between A & B ?
V(AB1)= V(R6)+V(R8)+V(R9)


What voltage would I expect when I connect a multimeter between C & D ?
V(CD1)= V(R7)+V(R8)+V(R10)

Consider the second circuit.

What voltage would I expect when I connect a multimeter between A & B ?
V(AB2)= V(R6)+V(R8)+V(R9)


What voltage would I expect when I connect a multimeter between C & D ?
V(CD2)= V(R8)

Am I right ? And V(AB2)>V(AB1)

 

[FvM]

What is a "5A load"? A current source? You have drawn a resistor.

 

[vinodquilon]

What is a "5A load"? A current source? You have drawn a resistor.

It is an electronic load set at 5A Constant Current mode.

 

[dick_freebird]

Many multimeters work by injecting a small current and
reading a voltage. A circuit with current already flowing
will jack that reading because the total current is not
what the injected current and its corrolary, assumed
scale factor are. If you're trying to measure resistance
using the resistance function.

In such a case, you would need to know the meter
scale factor & current to determine what the response
to some different current (sum) will be on a given
resistance.

Now if you're just using the voltage scale and an assumed
branch current, then "it is what it is" - "what it is", being the
likely point of the homework assignment.

 

[FvM]

The exercise problem isn't completely clear though.
- Each resistor has an arbitrary different value, calculate the differential voltages in general form
- All resistors are equal

 

[vinodquilon]

The exercise problem isn't completely clear though.
- Each resistor has an arbitrary different value, calculate the differential voltages in general form
- All resistors are equal

All are different resistors. The aim is to calculate voltage not resistance.