Combination of Resistances

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  $2\Omega$.

Is shunt a resistance?

What is shunt resistance in physics?

What does a shunt resistor do?

What does a shunt resistor do?

Three unequal resistors in parallel are equivalent to a resistance $1\Omega .$ If two of them are in the ratio $1:2$ and if no resistance value is fractional, the largest of the three resistances in ohm is $6$.

If $400\Omega$ of resistance is made by adding four $100\Omega$ resistance of tolerance $5\%$ then the tolerance of the combination in the percentage is.

Four infinite ladder alike networks are combined as shown in figure .Each resistance is $R\Omega$. The equivalent resistance between $A$ and $B$ is $R_{\mathrm{\text{AB}}}$ and between $A$ and $C$ is $R_{\mathrm{\text{AC}}}.$ Let ratio $\frac{R_{\mathrm{\text{AB}}}}{R_{\mathrm{\text{AC}}}}\mathrm{\text{is}}\frac{x}{4}$ then find the value of $x$.

A wire has a resistance of $24 \mathrm{\Omega }$ is bent in the following shape. The effective resistance between $A$ and $B$ is $n \mathrm{\Omega }$. The value of $n$ is

Five $1 \mathrm{\Omega }$ resistance are connected as shown in the figure. The equivalent resistance between $A$ and $B$ is (in $\mathrm{\Omega }$):-

Two wires of the same dimension but resistivity ${\rho }_1$, and ${\rho }_2$ are connected in series. The equivalent resistivity of the combination is

Three resistors are joined to form a triangle $\mathrm{ABC}$. The resistance of the sides$AB, BC$ and$CA$ are $40 \mathrm{\Omega }, 60 \mathrm{\Omega }$ and $100 \mathrm{\Omega }$ respectively. Find the equivalent resistance between points $A$ and $B$.

Three resistors each of resistance $10 \mathrm{\Omega }$ are connected parallel, If the effective resistance of the combination is $\frac{30}{n} \mathrm{\Omega }$. Find the value of $n$.

The equivalent resistance of the parallel combination of two resistors of $60 \mathrm{\Omega }$ and $40 \mathrm{\Omega }$ is _____.

Three resistors $2\Omega$, $4\Omega$ and $5\Omega$ are joined in parallel and connected to battery of 20V and negligible resistance. Find the equivalent resistance.

Three resistors are connected in parallel. The electric current $7.5 \mathrm{A}$ is flowing in this combination from a battery of emf $30 \mathrm{V}$. If the values of two resistors are $10 \mathrm{\Omega }$ and $12 \mathrm{\Omega }$, then write the value of third resistor in Ohms.