- #1

DrOnline

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## Homework Statement

Find the current in the circuit and the voltage on the volt meter

## Homework Equations

E=22.5 V

R

_{tot}= 1kΩ + 2.4kΩ + 5.6kΩ = 9kΩ

I=U/R=22.5V/9kΩ=2.5mA

A voltmeter has super high resistance, to prevent any current from passing through it. I know that.

So I have the resistance, I have the voltage at the source, and the current in the circuit. Tons of information to work with.

## The Attempt at a Solution

Here comes the problem. I don't understand the reasoning that explains what the volt meter is measuring. How do I know if I am measuring the left or the right side? What if there was a battery on the right side too, what then?

But what am I measuring? if you put a volt meter over E, or over R1, I get it. You get the voltage over those specific components, but when the volt meter is in the middle, am I measuring the left side, or the right?

Can somebody help me make sense of this? It's... a sad state of affairs that I don't get this, so please! :)