In an experiment of Wheatstone bridge, if the positions of cells and galvanometer are interchanged, then the balance points will

change

No worries! We‘ve got your back. Try BYJU‘S free classes today!

remain unchanged

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

depend on the internal resistance of the cell and resistance of the galvanometer

No worries! We‘ve got your back. Try BYJU‘S free classes today!

none of these

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is D remain unchanged
When Wheatstone bridge is balanced, $\frac{R_{1}}{R_{2}} = \frac{R_{3}}{R_{4}} o r \frac{R_{1}}{R_{3}} = \frac{R_{2}}{R_{4}}$

If the galvanometer is replaced with a cell in balanced Wheatstone bridge, the condition for balanced bridge will be unchanged. i.e $\frac{R_{1}}{R_{2}} = \frac{R_{3}}{R_{4}}$ . In balanced condition no current pass through the galvanometer. Thus, the null points will remian same.

Suggest Corrections

Similar questions

Q. If in the experiment of Wheatstone's bridge, the positions of cells and galvanometer are interchanged, then balance point will

(a) In a metre bridge [Fig. 3.27], the balance point is found to be at 39.5 cm from the end A, when the resistor Y is of 12.5 Ω. Determine the resistance of X. Why are the connections between resistors in a Wheatstone or meter bridge made of thick copper strips?

(b) Determine the balance point of the bridge above if X and Y are interchanged.

(c) What happens if the galvanometer and cell are interchanged at the balance point of the bridge? Would the galvanometer show any current?

Q. (a) In a meter bridge [Fig. 3.27], the balance point is found to be at39.5 cm from the end A, when the resistor Y is of 12.5 W.Determine the resistance of X. Why are the connections betweenresistors in a Wheatstone or meter bridge made of thick copperstrips? (b) Determine the balance point of the bridge above if X and Y areinterchanged.(c) What happens if the galvanometer and cell are interchanged atthe balance point of the bridge? Would the galvanometer showany current?

Q. In the given circuit a metre bridge is shown in the balanced state. The metre bridge wire has a resistance of

1 Ω

{c m}^{- 1}

. calculate the unknown resistance

X

and the current drawn from the is the battery of a negligible internal resistance if the magnitude of y is

6 Ω

. If at the balancing point. we interchange the position of the galvanometer and the cell, how it will affect the position of the galvanometer.

Q. If in a Wheatstone bridge the battery and Galvanometer are interchanged, the condition for balance

Join BYJU'S Learning Program