What is the direction of conventional current?

$1 \; kWh = \ldots \ldots \ldots \; \text{watt-seconds}$

The equivalent resistance between points $A$ and $B$ of the following electric circuit will be $.........$

What is the minimum resistance which can be made using five resistors each of $1/5\,\Omega$?

Define one watt hour.

Resistivity of two elements $A$ and $B$ are $1.62 \times 10^{-8} \, \Omega m$ and $520 \times 10^{-8} \, \Omega m$ respectively. Out of these two,name the element that can be used to make
$(i)$ filament of electric bulb.
$(ii)$ wires for electrical transmission lines. Justify your answer in each case.