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प्रश्न
Four resistances 4Ω,8Ω,XΩ, and 6Ω are connected in a series so as to form Wheatstone’s
network. If the network is balanced, find the value of ‘X’.
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उत्तर
R1 = 4Ω, R2 = 8Ω, R3 = XΩ, R4 = 6Ω
When Wheatstone’s network is balanced,

∴ X = 3 Ω
The value of ‘X’ is 3Ω.
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संबंधित प्रश्न
Explain with a neat circuit diagram how will you determine unknown resistance ‘X' by using meter bridge
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Obtain the balancing condition for the Wheatstone bridge arrangements as shown in Figure 4 below:

Choose the correct:
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In a meter bridge, the balance point is found to be at 39.5 cm from the end A when the resistor R is 12.5 Ω (right gap).
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b) Determine the balance point of the bridge if X and R are interchanged?
c) What happens if the galvanometer and cell are interchanged at the balance point of the bridge?
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The metre bridge works on the principle of ______.
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In the Wheatstone bridge, (shown in the figure) X = Y and A > B. The direction of the current between a and b will be ____________.

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In following figure, a current of 1.4 A flows towards the bridge circuit. The current in 2 n resistor is ______.
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The Wheatstone bridge is in a more balanced state when the ratio of arms P and Q is ______
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The measurement of an unknown resistance R is to be carried out using Wheatstones bridge (figure). Two students perform an experiment in two ways. The first students takes R2 = 10 Ω and R1 = 5 Ω. The other student takes R2 = 1000 Ω and R1 = 500 Ω. In the standard arm, both take R3 = 5 Ω. Both find R = `R_2/R_1 R_3` = 10 Ω within errors.
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- Wheatstone bridge is a very accurate instrument and has no errors of measurement.
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- Reason (R): For a balanced bridge small current should flow through the galvanometer.
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Draw a neat labelled diagram to determine unknown resistance using a meter bridge.
Four resistances 4Ω, 4Ω, 4Ω and 12Ω form a Wheatstone's network. Find the resistance which when connected across the 12Ω resistance will balance the network.
