The plot of current \(I~\text{(A)}\) flowing through a metallic conductor versus the applied voltage \(V~\text{(volt)}\) across the ends of a conductor is:

1.		2.
3.		4.

Which of the following \(({I\text-V})\) graphs represents ohmic conductors? 

1.		2.
3.		4.

Figure (i) and figure (ii) both are showing the variation of resistivity \((\rho)\) with a temperature \((T)\) for some materials. Identify the type of these materials.

         
1. Conductor and semiconductor 
2. Conductor and Insulator 
3. Insulator and semiconductor 
4. Both are conductors 

 
Which of the above statements are correct?

A battery consists of a variable number \(n\) of identical cells (having internal resistance \(r\) each) which are connected in series. The terminals of the battery are short-circuited and the current \(I\) is measured. Which of the graphs shows the correct relationship between \(I\) and \(n?\)

1.		2.
3.		4.

A cell having an emf \(\varepsilon\) and internal resistance \(r\) is connected across a variable external resistance \(R\). As the resistance \(R\) is increased, the plot of potential difference \(V\) across \(R\) is given by:

1.		2.
3.		4.