Explain construction of meter bridge used in laboratory.

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3.Current Electricity

medium

Explain construction of meter bridge used in laboratory.

Option A

Option B

Option C

Option D

Solution

Wire having uniform cross-section and uniform specific resistance (resistivity) and length of $1 \mathrm{~m}$ is tied to two end of steel plate as shown in figure. As shown in figure plate are of shape of right angle which consist of connector at their end points.

Between two end $\mathrm{A}$ and $\mathrm{C}$ of wire, battery, switch and sometimes rheostat is connected for regulating current.

Galvanometer is connected between two terminal at middle of metal plate.

Second end of galvanometer connected with jockey key. This can be moved on wire of meter bridge by keeping in contact with the wire.

Standard 12

Physics

The resistance per centimeter of a meter bridge wire is $\mathrm{r}$, with $\mathrm{X}\ \Omega$ resistance in left gap. Balancing length from left end is at $40 \mathrm{~cm}$ with $25\ \Omega$ resistance in right gap. Now the wire is replaced by another wire of $2 \mathrm{r}$ resistance per centimeter. The new balancing length for same settings will be at

hard

(JEE MAIN-2024)

Fig. shows rough sketch of meter bridge. $(G)$ deflects zero at length $\ell \, cm$. Now $R_1$ and $R_2$ are interchanged then balancing length increases by $25\, cm$. Find $R_1/R_2$

medium

When Wheatstone bridge is said to be in balanced condition ?

medium

In a meter bridge, the balancing length from the left end (standard resistance of $1 \,ohm$ is in the right gap) is found to be $20\, cm$. The value of the unknown resistance is …………… $\Omega$

easy

(AIPMT-1999)

$AB$ is a wire of uniform resistance. The galvanometer $G$ shows no current when the length $AC = 20\,cm$ and $CB = 80\, cm$. The resistance $R$ is equal to ………….. $\Omega $

easy

Explain construction of meter bridge used in laboratory.

Solution

Similar Questions

Fig. shows rough sketch of meter bridge. $(G)$ deflects zero at length $\ell \, cm$. Now $R_1$ and $R_2$ are interchanged then balancing length increases by $25\, cm$. Find $R_1/R_2$

When Wheatstone bridge is said to be in balanced condition ?

In a meter bridge, the balancing length from the left end (standard resistance of $1 \,ohm$ is in the right gap) is found to be $20\, cm$. The value of the unknown resistance is …………… $\Omega$

$AB$ is a wire of uniform resistance. The galvanometer $G$ shows no current when the length $AC = 20\,cm$ and $CB = 80\, cm$. The resistance $R$ is equal to ………….. $\Omega $

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