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A Wheatstone bridge is balanced for four resistors R1, R2, R3 and R4 with a Lech lanche cell between A and C and a galvanometer between B and D. The positions of the cell and the galvanometer are interchanged. The balance will
  • a)
    Not change
  • b)
    Change and can be obtained by changing R1
  • c)
    decrease by about 9%9%
  • d)
    Change and can be obtained by changing R4
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
A Wheatstone bridge is balanced for four resistors R1, R2, R3 and R4 w...
The balance point will not change . For balancing of wheatstone bridge four arms of resistors are responsible. Interchange the position of galvanometer and cell does not affect balancing of wheatstone bridge.
 
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A Wheatstone bridge is balanced for four resistors R1, R2, R3 and R4 w...
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A Wheatstone bridge is balanced for four resistors R1, R2, R3 and R4 w...
Explanation:

A Wheatstone bridge is a circuit used to measure unknown resistance values by balancing two legs of a bridge circuit. The balance condition occurs when the potential difference between the two midpoints of the bridge is zero. In this case, the bridge is balanced for resistors R1, R2, R3, and R4 with a Leclanche cell between points A and C and a galvanometer between points B and D.

Interchanging the positions of the cell and the galvanometer:
When the positions of the cell and the galvanometer are interchanged, the bridge configuration changes. In the original configuration, the Leclanche cell is connected between points A and C, and the galvanometer is connected between points B and D. However, when the positions are interchanged, the Leclanche cell is now connected between points B and D, and the galvanometer is connected between points A and C.

Effect on the balance condition:
When the positions of the cell and the galvanometer are interchanged, the balance condition of the Wheatstone bridge will not change. The reason for this is that the balance condition depends on the ratio of the resistances in the bridge circuit and not on the specific positions of the cell and the galvanometer.

Explanation of options:
a) Not change: This option is correct because the balance condition is independent of the position of the cell and the galvanometer. Hence, interchanging their positions will not affect the balance condition.
b) Change and can be obtained by changing R1: This option is incorrect because changing R1 will not restore the balance condition when the positions of the cell and the galvanometer are interchanged.
c) Decrease by about 9%: This option is incorrect as there is no evidence or explanation provided to suggest a decrease in the balance condition by about 9%.
d) Change and can be obtained by changing R4: This option is incorrect because changing R4 will not restore the balance condition when the positions of the cell and the galvanometer are interchanged.

Therefore, the correct answer is option 'A' - the balance condition will not change when the positions of the cell and the galvanometer are interchanged.
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A Wheatstone bridge is balanced for four resistors R1, R2, R3 and R4 with a Lech lanche cell between A and C and a galvanometer between B and D. The positions of the cell and the galvanometer are interchanged. The balance willa)Not changeb)Change and can be obtained by changing R1c)decrease by about9%9%d)Change and can be obtained by changing R4Correct answer is option 'A'. Can you explain this answer?
Question Description
A Wheatstone bridge is balanced for four resistors R1, R2, R3 and R4 with a Lech lanche cell between A and C and a galvanometer between B and D. The positions of the cell and the galvanometer are interchanged. The balance willa)Not changeb)Change and can be obtained by changing R1c)decrease by about9%9%d)Change and can be obtained by changing R4Correct answer is option 'A'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about A Wheatstone bridge is balanced for four resistors R1, R2, R3 and R4 with a Lech lanche cell between A and C and a galvanometer between B and D. The positions of the cell and the galvanometer are interchanged. The balance willa)Not changeb)Change and can be obtained by changing R1c)decrease by about9%9%d)Change and can be obtained by changing R4Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A Wheatstone bridge is balanced for four resistors R1, R2, R3 and R4 with a Lech lanche cell between A and C and a galvanometer between B and D. The positions of the cell and the galvanometer are interchanged. The balance willa)Not changeb)Change and can be obtained by changing R1c)decrease by about9%9%d)Change and can be obtained by changing R4Correct answer is option 'A'. Can you explain this answer?.
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