Question

An unknown length of platinum wire 1.14 mm in diameter is placed as the unknown resistance in a Wheatstone bridge (see figure). Arms 1 and 2 have resistance of 39.6 92 and 28.8 12, respectively. Balance is achieved when R3 is 3.88 22.(Figure 1) Part A How long is the platinum wire? 190 AED ? Figure C 1 oft m B Rs Submit Request Answer Ammeter Provide Feedback RA 2 D

Answer 1

Date : Page No. In the balance state R3 Rx R₂ R2 23 (A Rx & Rx 28.8 3.88 139.6 R = 2.8222 Rx 3th ARA ² 1 9 it (1.1933)* *2-822 41.06X167) > L L=127.17m