Electrical and Electronics Measurements Measurement of R/L/C Using Bridge Circuits Measurement of Resistance
In case of the Wheatstone bridge shown in the below circuit diagram P = 3 kΩ and Q = 5 kΩ. The null value for the galvanometer is obtained when S = 6 kΩ. Find the value of R and the resistance measurement range of the bridge if ‘S’ value varies from 1 kΩ to 8 kΩ
1
R = 2.6 kΩ S = 500 Ω to 3.8 kΩ
2
R = 5.6 kΩ S = 400 Ω to 5.8 kΩ
3
R = 3.6 kΩ S = 500 Ω to 5.8 kΩ
4
R = 3.6 kΩ S = 600 Ω to 4.8 kΩ