Given below are two statements:
Statement-I: The resistivity of a conductor is independent of its temperature.
Statement-II: The resistivity of a semiconductor decreases with increase in temperature.
Select the correct option.

The number of electrons moving per second through the filament of a lamp of $60$ W operating at $120$ V is nearly $(e = 1.6 \times 10^{-19}\text{ C})$ _____________.

$$ \text { In the following circuit, the terminal voltage across the cell is } $$

Two cells of emfs $E_1$ and $E_2$ and internal resistances $r_1$ and $r_2\left(E_2>E_1\right.$ and $\left.r_2>r_1\right)$ respectively, are connected in parallel as shown in figure. The equivalent emf of the combination is $\mathrm{E}_{\text {eq. }}$. Then