NEET 2022 Physics solution| A Wheatstone bridge is used to determine the value of unknown resistance
Channel: PHYSICSAHOLICS - Prateek Jain JEE NEET
Date: 2022-07-17

Q) 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 & Q:
(1) should be very large and unequal  
(2) do not play any significant role 
(3) should be approximately equal to 2X   
(4) should be approximately equal and are small

Ans. (1)

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