Electro Magnetic Induction And Alternating Currents Question 583
Question: Two coils A and B having turns 300 and 600 respectively are placed near each other, on passing a current of 3.0 ampere in A, the flux linked with A is $ 1.2\times {{10}^{-4}},weber $ and with B it is $ 9.0\times {{10}^{-5}},weber $ . The mutual inductance of the system is [MP PMT 2001]
Options:
A) $ 2\times {{10}^{-5}},henry $
B) $ 3\times {{10}^{-5}},henry $
C) $ 4\times {{10}^{-5}},henry $
D) $ 6\times {{10}^{-5}},henry $
Show Answer
Answer:
Correct Answer: B
Solution:
$ N_{2}{\varphi_{2}}=Mi_{1}\Rightarrow 9\times {{10}^{-5}}=M\times 3 $
$ \Rightarrow M=3\times {{10}^{-5}}H $
