What is the effect on null deflection of galvanometer, when the radius of the wire is tripled?
A. No change
B. Becomes half
C. Reduces by (frac {1}{3})
D. Thrice the original value
Answer:A
What is the effect on null deflection of galvanometer, when the radius of the wire is tripled?
A. No change B. Becomes half C. Reduces by (frac {1}{3}) D. Thrice the original value