The flux linked with a coil at any instant t is `psi = (5t^2 - 10t + 7)` weber. Calculate the induced emf across the coil at t = 2 sec

The magnetic flux linking a coil perpendicular to its plane is varying according to the relation phi = (5t^3 + 4t^2 + 2t-6) Wb. Calculate induced current through the coil at t = 2s if the resistance of the coil I s 3Omega .

The charge (Q) flowing through a conductor at a given instant of time (t) is given by Q = (2t^2 - 3t) coul. Then the current at time instant t = 2 second in ampere is

A coil of 200 turns is linked with a magnetic flux that changes from 10^-5 weber to 10^-4 weber is a millisecond. Find the emf induced across the coil.