For the post office box arrangement to determine the value of unknown resistance, the unknown resistance should be connected between

Question

For the post office box arrangement to determine the value of unknown resistance, the unknown resistance should be connected between (A) B and C (B) C and D (C) A and D (D) B1 and C1

Tardigrade Admin · Accepted Answer

BC, CD and BA are known resistances. The unknown resistance is connected between A and D. Hence, the correct option is (c).

Q. For the post office box arrangement to determine the value of unknown resistance, the unknown resistance should be connected between

B and C

C and D

A and D

$B_{1} an d C_{1}$

BC, CD and BA are known resistances. The unknown resistance is connected between A and D.
Hence, the correct option is (c).