Physics · PYQ NEET UG 2022
हिन्दीA 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:
Correct answer · Option 4
should be approximately equal and are small
Explanation
A Wheatstone bridge is most sensitive and precise when all four arms have comparable resistances, meaning P and Q should be approximately equal and small.