The statement that is most correct about the following circuit is:

A student set up an electric circuit shown here for finding the equivalent resistance of two resistors in series. In this circuit the:

For the two circuits I and II shown below, the voltmeter readings would be:

In the experiment on finding the equivalent resistance of two resistors, connected in parallel, two students connected the ammeter in two different ways as shown in given circuits $\mathrm{I}$ and $\mathrm{II}$. The ammeter has been correctly connected in:

In the experiment on finding the equivalent resistance of two resistors, connected in parallel, the voltmeter has been correctly connected in:

The given circuit diagram shows the experimental arrangement of different circuit components for determination of equivalent resistance of two resistors connected in series. The components X, Y and Z are shown in the circuit, respectively represent:

For the experiment “to find the equivalent resistance of the two given resistors connected in parallel” the following circuit was drawn by a student:

The teacher pointed out the possibility of the following faults:

$A.$The ammeter was not correctly connected in the circuit

$B.$The voltmeter was not correctly connected in the circuit

$C.$The resistors $R_1$ and $R_2$ were not correctly connected in parallel

$D.$The rheostat and the key were not correctly connected in the circuit.

The two faults pointed out correctly by the teacher, are

The current flowing through a resistor connected in an electric circuit and the potential difference developed across the ends of it are as shown in the diagrams.

The value of the resistance of the resistor used in ohm is: