Shushant was doing an experiment by using an ammeter. Unfortunately, it fell from his hand and broke. Fearing the scolding of teacher, his group mates advised him not to tell the teacher, but he told her. On listening to him patiently, the teacher did not scold him as it was just and accident and used the opportunity to show the whole class the internal structure of ammeter.
State the aim of any one experiment where Shushant could have used the ammeter.
Shushant could have used the ammeter to verify the ohm’s law which states that “current flowing through a conductor is directly proportional to the potential difference across the conductor”
I 
V.
After setting up the circuit (as shown in figure below) and drawing the graph between V and I will get the straight line passing through origin.
The Ammeter will measure the current and the Voltmeter will measure the potential difference across the resistor and the ratio of voltage and current will give the resistance which is constant.