Electronics and Communication Engineering - Electromagnetic Field Theory - Discussion

40. 

In a 100 turn coil, if the flux through each turn is (t3 - 2t)mWb, the magnitude of the induced emf in the coil at a time of 4 sec is

[A]. 46 mV
[B]. 56 mV
[C]. 4.6 V
[D]. 5.6 V

Answer: Option C

Explanation:

E = 100 (3t2 - 2) 100(46) 4600 mV

4.6 V.


Kumar said: (Nov 12, 2016)  
Please explain it.

Ravi said: (Feb 15, 2019)  
@All.

Use differentiation, and solve using the formula of Faraday's law.

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