The magnetic flux through a coil perpendicular to its plane is varying according to the relation `phi_(B)= (5t^(3) +4t^(2) + 2t - 5)` weber. Calculate the induced current through the coil at t = 2 second. The resistance of the coil is 5 `Omega`.

Explanation

`phi= 5t^(3) + 4t^(2) + 2t-5`
`|e| = (d phi)/(dt) = 15t^(2) + 8t + 2`
`iR = 15t^(2) + 8t + 2`
`i xx 5 = 15 xx 4 + 8 xx 2 + 2 rArr i= 15.6A`