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The magnetic flux through a coil is vary...

The magnetic flux through a coil is varying according to the relation `phi = (5 t^(3) + 4 t^(2) + 2t - 5)` Wb. Calculate the induced current through the coil at `t = 2` s if resistiance of coil is 5 ohm.

Text Solution

Verified by Experts

`phi=5t^3+4t^2+2t-5`
`|e|=(dphi)/(dt)=15t^2+8t+2`
at t=2 sec,
`=15 xx4 +8xx2+2`
e=78V
`i=E/R=(78)/5=15.6A`
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