How much work is done in moving a charge of $2 \, C$ across two points having a potential difference of $12 \, V$ (in $, J$)?

An electric heater consumes $1.1 \,kW$ power when $220 \,V$ voltage is applied to it. How much current will be flowing through it (in $,A$)?

Calculate the equivalent resistance between the points $A$ and $B$ in the following combination.

$V-I$ graphs for two wires $A$ and $B$ are shown in the figure. If both the wires are made of the same material and are of equal thickness,which of the two is of more length? Give justification for your answer.

$A$ series circuit has only one conducting path for the electrons that move through it; a parallel circuit has multiple conducting paths.

Find out the following in the electric circuit given in the figure:
$(a)$ Effective resistance of two $8\,\Omega$ resistors in the combination.
$(b)$ Current flowing through the $4\,\Omega$ resistor.
$(c)$ Potential difference across the $4\,\Omega$ resistor.
$(d)$ Power dissipated in the $4\,\Omega$ resistor.
$(e)$ Difference in ammeter readings,if any.