Question 637: Current Electricity

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 resistance P and Q

Accepted Answer

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.

Answer

Should be approximately equal to 2X

Answer

Should be approximately equal and are small

Answer

Should be very large and unequal

Answer

Do not play any significant role

Current Electricity

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

Choose the correct answer: