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Current Electricity question

2022 · Q171
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Current Electricity question

2022 · Q171

NEETPhysicsCurrent ElectricityMCQ+4 / −1

A wheatstone bridge is used to determine the value of unknown resistance X by adjusting the variable resistance Y as shown in the figure. For the most precise measurement of X, the resistance P and Q

NEET 2022 Phase 1 Physics - Current Electricity Question 25 English

  1. A
    Should be approximately equal to 2X
  2. B
    Should be approximately equal and are small
  3. C
    Should be very large and unequal
  4. D
    Do not play any significant role
View written solutionFree

Correct answer: B

We know, a wheatstone bridge is said to be most precise when it is most sensitive. This can be done by making ratio arms equal. Thus (2) is correct option.

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