Wheatstone Bridge

IMPORTANT

Wheatstone Bridge: Overview

This Topic covers sub-topics such as Wheatstone Bridge, Electrical Instruments, Unbalanced Wheatstone Bridge, Balanced Wheatstone Bridge and, Sensitivity of Wheatstone Bridge

Important Questions on Wheatstone Bridge

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IMPORTANT

The current drawn from the battery in the given network is

 

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The magnitude of resistance X  in the circuit shown in the given figure, when no current flows through the  Ω  resistor is

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The percentage error in measuring resistance with a meter bridge can be minimised by adjusting the balancing point close to

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The equivalent resistance of the circuit shown below between points a and b is :

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MEDIUM
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The equivalent resistance between the points A and B is:

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Find (a) Equivalent resistance (b) and current in each resistance.

HARD
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In the circuit shown, equivalent resistance between A and B is:

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A battery of 6 V is connected to the circuit as shown below. The current I drawn from the battery is

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The current I in the given circuit will be

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Current measured by the ammeter A in the reported circuit when no current flows through 10Ω resistance, will be _____ A.

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In the circuit shown, calculate the reading on the ammeter.

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B shaped circuit is made of equal resistances r, the equivalent resistance across AC is

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In the given figure, calculate the equivalent resistance between points A and B.

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The four impedance of a.c. bridge shown below are Z1=640+j 765, Z2=150+j 130, Z3=320-j 380. Determine the value of impedance Z4, such that the bridge is balanced.

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HARD
IMPORTANT

Equivalent resistance between point A and B is 73n Ω. Then value of n is

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In the circuit shown:

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In the following circuit, the effective resistance between the points P and Q is

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In comparing the resistance of 2 coils P and Q with a slide wire bridge, a balance point is obtained when the sliding contact is 30 cm from the zero end of the wire. The resistances P and Q are interchanged and the balance is obtained at 120 cm from the same end. The length of the bridge wire is

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A balanced Wheatstone bridge shown in the figure. If the positions of the cell C and the galvanometer G are now interchanged, G will show zero deflection.

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Six equal resistances each 1Ω are joined to form a network as shown in the figure. Then the resistance between any two corners is