$A$ bulb rated at $(100\,W, 200\,V)$ is used on a $100\,V$ line. The current in the bulb is

Two wires of the same material having lengths and radii in the ratio of $3:4$ and $3:2$ respectively are connected in parallel with a potential source of $6 \ V$. The ratio of currents flowing through them $I_1:I_2$ is . . . . . . .

Considering the following circuit,select the correct alternative.

Thirteen resistances,each of resistance $R \, \Omega$,are connected in the circuit as shown in the figure below. The effective resistance between $A$ and $B$ is

$A$ potential divider is used to give outputs of $4\, V$ and $8\, V$ from a $12\, V$ source. Which combination of resistances $(R_1, R_2, R_3)$ gives the correct voltages? Find the ratio $R_1 : R_2 : R_3$.

Find the value of the current from the battery in the circuit shown in the figure. (in $A$)