The variation of current $(i)$ and voltage $(V)$ in a conductor is shown in the diagram below. The resistance of the conductor is ........... $\Omega$.

The charge $q$ (in coulomb) passing through a $10 \, \Omega$ resistor as a function of time $t$ (in second) is given by $q = 3t^2 - 2t + 6$. The potential difference across the ends of the resistor at time $t = 5 \, s$ is: (in $V$)

Of the following graphs,the one that correctly represents the $I-V$ characteristics of an 'Ohmic device' is:

The voltage $V$ and current $I$ graph for a conductor at two different temperatures $T_{1}$ and $T_{2}$ is shown in the figure. The relation between $T_{1}$ and $T_{2}$ is

The $V-I$ graph for a conductor at temperatures $T_1$ and $T_2$ is as shown in the figure. $T_2-T_1$ is proportional to

The $I-V$ graphs for two different electrical appliances $P$ and $Q$ are shown in the diagram. If $R_P$ and $R_Q$ are the resistances of the devices,then: