NEET Physics Wheatstone Bridge MCQ Question
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 resistances P and Q :
Do not play any significant role
Should be approximately equal to 2X
Should be approximately equal and are small
Should be very large and unequal
Correct Answer
Detailed Explanation
For maximum sensitivity in a Wheatstone bridge, P and Q should be equal and small to balance the bridge effectively.
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