Magnetism Question 111
Question: When $ \sqrt{3} $ ampere current is passed in a tangent galvanometer, there is a deflection of 30° in it. The deflection obtained when 3 amperes current is passed, is
[MP PMT 1997]
Options:
A) 30°
B) 45°
C) 60°
D) 75°
Show Answer
Answer:
Correct Answer: B
Solution:
$ i\propto \tan \theta \Rightarrow \frac{i _{1}}{i _{2}}=\frac{\tan {\theta _{1}}}{\tan {\theta _{2}}}\Rightarrow \frac{\sqrt{3}}{3}=\frac{\tan 30^{o}}{\tan {\theta _{2}}}\Rightarrow \theta =45^{o} $
BETA
