Magnetism Question 103
Question: The sensitivity of a tangent galvanometer is increased if
[AFMC 1995]
Options:
A) Number of turn decreases
B) Number of turn increases
C) Field increases
D) None of the above
Show Answer
Answer:
Correct Answer: B
Solution:
Sensitivity $ S=\frac{\theta }{i}=\frac{\theta }{K\tan \theta } $ where $ K=\frac{2RB _{H}}{{\mu _{0}}N} $ For increasing sensitivity K should be decreased and hence number of turns should be increased.
BETA
