$A$ conducting wire offers resistance to the flow of electrons because electrons repel each other in the wire.

What is the formula to find electric power $P$?

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.

$A$ bulb is rated $220\;V$ and $100\;W$. What is the resistance of this bulb?

$(a)$ Name an instrument that measures electric current in a circuit. Define the unit of electric current.
$(b)$ What do the following symbols mean in an electric circuit?
$(c)$ Draw a closed circuit diagram consisting of a $0.5\, m$ long nichrome wire $XY$,an ammeter,a voltmeter,four cells of $1.5\, V$ each,and a plug key.

The amount of $2 \ A$ electric current is passed for $1 \ minute$ through a conducting wire. How much total electric charge will pass through this wire (in $C$)?