Wheatstone Bridge

Figure shows an unbalanced Wheatstone bridge. What is the direction of conventional current between $B$ and $D$?

If the central resistance is $15 \mathrm{\Omega }$, then the equivalent resistance between $A$ and $B$ will be

Find the equivalent resistance between $X$ and $Y$.

The effective resistance between $\mathrm{A}$ and $\mathrm{B}$ is

As shown in the figure below, a cube is formed with ten identical resistance $R$ (thick lines) and two shorting wires (dotted lines) along the arms $AC$ and $BD$.

The resistance between points $A$ and $B$ is

Figure $\left(\mathrm{a}\right)$ below shows a Wheatstone bridge in which $P,Q,R,S$ are fixed resistances, $G$ is a galvanometer and $B$ is a battery. For this particular case, the galvanometer shows zero deflection. Now, only the positions of $B$ and $G$ are interchanged, as shown in figure $\left(\mathrm{b}\right)$. The new deflection of the galvanometer-

Find the equivalent resistance between $X$ and $Y$.

The effective resistance between points P and Q of the electrical circuit as shown in the figure is

 

What is the value of $R$ in Ohms such that the current in the galvanometer is zero?

In the arrangement of resistances shown below, the effective resistance between points $A$ and $B$ is

Find the equivalent resistance between the points $A$ and $B :-$

In a Wheatstone bridge the branch resistances are as shown in the following circuit diagram. What will be the value of $X$ in balancing the condition of the Wheatstone bridge?

On interchanging the position of battery and galvanometer in Wheatstone bridge respectively the new balance point:

In the circuit shown in figure, the cell is ideal with emf $9 \mathrm{V}$. If the resistance of the coil of galvanometer is $1 \mathrm{\Omega }$, then

Resistance $P\mathit{,}Q\mathit{,} S$ and $R$ are arranged in a cyclic order to form a balanced Wheatstone’s network. The ratio of power consumed in the branches $\mathit{(}P\mathit{+}Q\mathit{)}$ and $\mathit{(}R\mathit{+}S\mathit{)}$ is:

In a Wheatstone network, $P=2\mathrm{ }\mathrm{\Omega },\mathrm{ }Q=2\mathrm{ }\mathrm{\Omega },\mathrm{ }R=2\mathrm{ }\mathrm{\Omega }\mathrm{ }$ and $S=3\mathrm{ }\mathrm{\Omega }$. The resistance with which $S$ is to be shunted in order that the bridge may be balanced is

In the adjoining circuit, the resistances are given in ohm, $X$ and $Y$ are unknown resistances. The current through the $10\mathrm{\Omega }$ resistance is $3\mathrm{A}$ while that through the resistance $X$ is $1 \mathrm{A}.$ No current passes through the galvanometer. The values of the unknown resistances $X$ and $Y$ are respectively

In a Wheatstone bridge (see figure), resistances $P$ and $Q$ are remain unchanged. When $R=400 \mathrm{\Omega },$ the bridge is balanced. On interchanging $P$ and $Q$, the value of $R$ for balanced bridge is $405 \mathrm{\Omega }$. The value of $X$ is close to:

In a Wheatstone bridge setup, $P$ and $Q$ are approximately equal. Initially $R=400\mathrm{\Omega }$ at balancing conditions. When $P$ and $Q$ are inter changed, then bridge is balanced for $R=405\mathrm{\Omega }$ . Then the value of $X$ is.

There is a balanced wheatstone bridge as shown in figure. If the colour strips of $R_1$ is Orange-Red-Brown. Then the color code of $R_3$ is