Combinations of Resistors

A wire of  $20\Omega$  resistance is gradually stretched to double its original length. It is then cut into two equal parts. These parts are then connected in parallel across a 4.0 volt battery. The current drawn from the battery is:

A (i) series (ii) parallel combination of two given resistors is connected, one – by – one, across a cell. In which will the terminal potential difference, across the cell, have a higher value?

(i) Calculate the equivalent resistance of the given electrical network between points $A$ and $B$.

(ii) Also calculate the current through $CD$, if a $10 \mathrm{V} DC$ source is connected between $A$ and $B$, and the value of $R$ is assumed as  $2\Omega$.

The circuit shown here has two batteries of $8.0 \mathrm{V}$ and $16.0 \mathrm{V}$ and three resistors $3 \mathrm{\Omega }, 9 \mathrm{\Omega }, 9 \mathrm{\Omega }$ with a capacitor $5 \mathrm{\mu }$. How much is the  current $I$ in the circuit at steady state 

A network of four resistances is connected to $9 \mathrm{V}$ battery, as shown in figure. The magnitude of voltage difference between the points $A$ and $B$ is __________ $\mathrm{V}$.

Two identical heater filaments are connected first in parallel and then in series. At the same applied voltage, the ratio of heat produced in same time for parallel to series will be:

The current flowing through $R_2$ is :

$10$ resistors each of resistance $10 \Omega$ can be connected in such as to get maximum and minimum equivalent resistance. The ratio of maximum and minimum equivalent resistance will be________.

The equivalent resistance between $\mathrm{A}$ and $\mathrm{B}$ as shown in figure is:

The effective resistance in the given circuit between $A$ and $B$ points is

Find the magnitude of potential difference (in $\mathrm{volt}$) between A and B in the given circuit.

Find the reading of ideal ammeter

Two identical bulbs are first connected in series then in parallel. Find the ratio of power consumed in two cases.

Find the current flowing in $3 \mathrm{\Omega }$ resistor in the given circuit.

$10$ resistors each of $10 \mathrm{\Omega }$ resistance when connected together give minimum equivalent resistance $R_1$ and maximum equivalent resistance $R_2$ among various possible combinations. So $\frac{R_2}{R_1}$ is equal to

Find the equivalent resistance between points $A$ and $B$ for the following figure.

The equivalent resistance of the network shown in figure between$A$and $B$ is 

The current $I$ in the circuit is