Wheatstone Bridge

Resistance across $AB$ as shown in figure is

In the network of five resistors, what should be the value of $y$ such that effective resistances between points $a$ and $b$ does not change.

A galvanometer having a coil resistance of $60 \mathrm{\Omega }$ shows full scale deflection when a current of $1.0 \mathrm{A}$ passes through it. It can be converted into an ammeter to read currents upto $5.0 \mathrm{A}$ by

A galvanometer has resistance of $400 \mathrm{\Omega }$ and deflects full scale for current of $0.2 \mathrm{mA}$ through it. The shunt resistance required to convert it into $3 \mathrm{A}$ ammeter is

Five equal resistances each of resistance $R$ are connected as shown in the figure. A battery of $V$ volts is connected between $A$ and $B.$ The current flowing in $FC$ will be:

A circuit consists of five identical conductors as shown in figure. The two similar conductors are added as indicated by dotted lines. The ratio of resistances before and after addition will be

Find the equivalent resistance between the points $A$ and $B$.

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

From resistances of $100$ ohm each are connected in the form of a square. The effective resistance along the diagonal points $P R$ is 

The potential difference between point $A \text{and }B$ is

The equivalent resistance between $A$ and $B$ in the given circuit will be

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

A meter bridge is set-up as shown, to determine an unknown resistance $\text{'}X\text{'}$ using a standard $10 \mathrm{ohm}$ resistor. The galvanometer shows null point when tapping-key is at $52 \mathrm{cm}$ mark. The end-corrections are $1 \mathrm{cm}$ and $2 \mathrm{cm}$ respectively for the ends $\mathrm{A}$ and $\mathrm{B}$. The determined value of ${\mathrm{X}}^{\text{'}}$ is:

A bridge circuit is shown in the figure. The equivalent resistance between $A$ and $B$ will be:

Find current$i$ in circuit shown in figure.

Four resistance of $10 \mathrm{\Omega }, 60 \mathrm{\Omega }, 100 \mathrm{\Omega }$ and $200 \mathrm{\Omega }$ respectively taken in order are used to form a Wheatstone's bridge. A $15 \mathrm{V}$ battery is connected to the ends of a $200 \mathrm{\Omega }$ resistance, the current through it will be

The Wheat bridge shown in the figure is balanced. If the positions of the cell $C$ and the galvanometer $G$ are now interchanged, $G$ will show zero deflection 

Each resistance shown in figure is $2 \mathrm{\Omega }$. The equivalent resistance between $A$ and $B$ is

In Wheatstone bridge, $4$ resistors $\mathrm{P}=10 \mathrm{\Omega }, \mathrm{Q}=5 \mathrm{\Omega }, \mathrm{R}=4 \mathrm{\Omega }, \mathrm{S}=4 \mathrm{\Omega }$ are connected in cyclic order. To ensure no current through galvanometer

Five identical resistors each of resistance $1 \mathrm{\Omega }$ are initially arranged as shown in the figure by dark lines. If two similar resistances are added as shown by the dashed lines, then change in resistance in final and initial arrangement is