Magnetic Effects Of Current Question 176
Question: A moving coil galvanometer has N number of turns in a coil of effective area A, it carries a current I. The magnetic field B is radial. The torque acting on the coil is [MP PMT 1994]
Options:
A) $ NA^{2}B^{2}I $
B) $ NABI^{2} $
C) $ N^{2}ABI $
D) NABI
Show Answer
Answer:
Correct Answer: D
Solution:
$ \tau =MB\sin \theta $
Þ $ {\tau_{\max }}=NiAB $ , ( $ \theta =90{}^\circ $ )
BETA
