Find out which circuit is suitable for a range of resistances that an ammeter and voltmeter can measure.

The first 200 words of this essay...

How do I connect this Voltmeter?

Aim

I have been given two circuits to investigate and I have to find out which circuit is suitable for a range of resistances that an ammeter and voltmeter can measure.

I will be using DC circuits. I will use ohms law throughout the investigation to determine the relationship and to deduce the voltage and current at a given resistance. I have two different circuits to investigate; circuit 1, with a voltmeter in parallel with a resistor and an ammeter in series with the resistor and circuit 2, with a voltmeter in parallel with the resistor and ammeter. I have to find out how these two circuits are affected with different resistors.

Prediction

In circuit 1, the voltmeter is connected across the resistor in parallel and the ammeter is connected in series, will give me the potential difference across the resistor and not the ammeter. The ammeter will measure the current flowing through the whole circuit. The voltmeter has a very large resistance to stop large currents flowing through it. According to Kirchhoff's 1st Law " the sum of the currents flowing into any point in a circuit is equal