Here, $R_1=18\mathrm{.}0,R_2=6\mathrm{.}00,$ and $R_3=12\mathrm{.}0.$

A$.$ resistors are connected in parallel with each other.

B$.$ The equivalent $($total$)$ resistance of the resistors in the circuit is $.$

C$.$ The total current drawn from the $21$ V battery in this circuit will be $[$Sely $$ A$,$ flowing in the $$ direction.

D$.$ The current flowing through the resistor $R_1$ will be $[$ Seler $$ A$.$

E$.$ The potential difference $($drop$)$ across resistor $R_1$ will be $$ V$.$

F$.$ The power dissipated through resistor $R_1$ will be $$ W$.$

G$.$ A wire has a resistance $R.$ If the wire is quadrupled in length and halved in its radius, the resistance of this wire will $,$ and its resistivity will $.$ The new resistance of the wire will be times its initial value $($R$).$