The standard cell of 1.1 V is balanced on 2.20 m length in potentiometer. Potential difference across any resistance is balanced at 95 cm and voltmeter shows 0.5 V reading then error in the reading of voltmeter will be :
A. +0.025 V
B. +0.525 V
C. -0.025 V
D. -0.525 V
Answer:A
The standard cell of 1.1 V is balanced on 2.20 m length in potentiometer. Potential difference across any resistance is balanced at 95 cm and voltmeter shows 0.5 V reading then error in the reading of voltmeter will be :
A. +0.025 V B. +0.525 V C. -0.025 V D. -0.525 V