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QNEET-2022-Ph-461: NEET 2022 Physics - Class 12 NEET-2022-Ph-461 Solution: A wheatstone bridge is used to determine the value of unknown…
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 Should be approximately equal to 2X Should be approximately equal and are small Should be very large and unequal Do not play any significant role
Multiple Choice Options
- A Should be approximately equal to 2X
- B Should be approximately equal and are small
- C Should be very large and unequal
- D Do not play any significant role
Step-by-Step Verified Solution
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.