Two filaments of same length are connected first in series and then in parallel. For the same amount of main current flowing the ratio of the heat produced is

In the given circuit, the current through $2 \mathrm{\Omega }$ resistor is

Each resistance in the given cubical network has resistance of $1\mathrm{\Omega }$ and equivalent resistance between $A$ and $B$ is

The current in the $1 \mathrm{\Omega }$ resistor shown in the circuit is,

A dc source with internal resistance $R_0$ is connected to three identical resistors each of resistance $R$ as shown in the figure. If the thermal power generated in the circuit is highest, then

Six similar bulbs are connected as shown in the figure with a DC source of emf $E$, and zero internal resistance.
The ratio of power consumption by the bulbs when $\left(\mathrm{i}\right)$ all are glowing and $\left(\mathrm{ii}\right)$ in the situation when two from section $A$ and one from section $B$ are glowing will be, 

Thirteen resistors each of resistance $R$ are connected in the circuit as shown in the following figure. Net resistance between $A$ and $B$ is

The equivalent resistance between $A$ and $B$ for the mesh shown in the figure is

$A$ and $B$ are two points on a uniform ring of resistance $19 \mathrm{\Omega }.$ The angle $\angle AOB=45°$. The equivalent resistance between $\mathrm{A}$ and $\mathrm{B}$ is

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What will be the equivalent resistance between the terminals $A$ and $B$ of the infinite resistive network shown in the figure ?