Wheatstone bridge - Sensitivity of the galvanometer

Q.  To produce a change of 2 mm in deflection of galvanometer, a change of 4 ohm is required in the unknown arm of a Wheatstone bridge. The sensitivity of the galvanometer is
- Published on 05 Nov 15

a. 1 mm/ohm
b. 0.5 mm/ohm
c. 1.5 mm/ohm
d. 2 mm/ohm

ANSWER: 0.5 mm/ohm

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