1.

Exercise.4.03Themagneticfluxthrough a coil is varying accordingto the relation ф (5t3 + 4t' + 2t-5) weber.Calculate the induced current through the coilatt 2s if the resistance of the coil is 5 ohm

Answer»

given​φ = 5 t^3 + 4t^2 + 2t - 4Hence induced emf e = - dφ/dt = - (15t^2 + 8t + 2)So emf when t = 2 se = - (60 + 16 + 2) = - 78 VSo current induced = - 78/5 =- 15.6 A[ I = e / R]Negative sing indicates that the induced current will try to oppose the change in flux



Discussion

No Comment Found

Related InterviewSolutions