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(Solved): The magnetic flux through a coil with a resistance of 10 changes over time as shown in the fi ...



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The magnetic flux through a coil with a resistance of changes over time as shown in the figure. Which of the following is the inductance of the coil in Henry at second? A) B) 20 C) 50 D) 80 E) 150


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Given,
Resistance of the coil,   
From the figure, flux changes from    to    in 4s.
Then,   
So, the flux as a function of time is given by,


Then, at t =3 s, flux is,   
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